CN105489229A - 具有在双铁磁自由层层压之间的正耦合的传感器 - Google Patents
具有在双铁磁自由层层压之间的正耦合的传感器 Download PDFInfo
- Publication number
- CN105489229A CN105489229A CN201510640808.0A CN201510640808A CN105489229A CN 105489229 A CN105489229 A CN 105489229A CN 201510640808 A CN201510640808 A CN 201510640808A CN 105489229 A CN105489229 A CN 105489229A
- Authority
- CN
- China
- Prior art keywords
- sublayer
- layer
- ferromagnetic
- free layer
- scope
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
- G11B5/127—Structure or manufacture of heads, e.g. inductive
- G11B5/33—Structure or manufacture of flux-sensitive heads, i.e. for reproduction only; Combination of such heads with means for recording or erasing only
- G11B5/39—Structure or manufacture of flux-sensitive heads, i.e. for reproduction only; Combination of such heads with means for recording or erasing only using magneto-resistive devices or effects
- G11B5/3903—Structure or manufacture of flux-sensitive heads, i.e. for reproduction only; Combination of such heads with means for recording or erasing only using magneto-resistive devices or effects using magnetic thin film layers or their effects, the films being part of integrated structures
- G11B5/3906—Details related to the use of magnetic thin film layers or to their effects
- G11B5/3909—Arrangements using a magnetic tunnel junction
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
- G11B5/127—Structure or manufacture of heads, e.g. inductive
- G11B5/33—Structure or manufacture of flux-sensitive heads, i.e. for reproduction only; Combination of such heads with means for recording or erasing only
- G11B5/39—Structure or manufacture of flux-sensitive heads, i.e. for reproduction only; Combination of such heads with means for recording or erasing only using magneto-resistive devices or effects
- G11B5/3903—Structure or manufacture of flux-sensitive heads, i.e. for reproduction only; Combination of such heads with means for recording or erasing only using magneto-resistive devices or effects using magnetic thin film layers or their effects, the films being part of integrated structures
- G11B5/3906—Details related to the use of magnetic thin film layers or to their effects
- G11B5/3929—Disposition of magnetic thin films not used for directly coupling magnetic flux from the track to the MR film or for shielding
- G11B5/3932—Magnetic biasing films
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
- G11B5/127—Structure or manufacture of heads, e.g. inductive
- G11B5/33—Structure or manufacture of flux-sensitive heads, i.e. for reproduction only; Combination of such heads with means for recording or erasing only
- G11B5/39—Structure or manufacture of flux-sensitive heads, i.e. for reproduction only; Combination of such heads with means for recording or erasing only using magneto-resistive devices or effects
- G11B5/3903—Structure or manufacture of flux-sensitive heads, i.e. for reproduction only; Combination of such heads with means for recording or erasing only using magneto-resistive devices or effects using magnetic thin film layers or their effects, the films being part of integrated structures
- G11B5/3906—Details related to the use of magnetic thin film layers or to their effects
- G11B5/3945—Heads comprising more than one sensitive element
- G11B5/3948—Heads comprising more than one sensitive element the sensitive elements being active read-out elements
- G11B5/3951—Heads comprising more than one sensitive element the sensitive elements being active read-out elements the active elements being arranged on several parallel planes
- G11B5/3954—Heads comprising more than one sensitive element the sensitive elements being active read-out elements the active elements being arranged on several parallel planes the active elements transducing on a single track
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
- G11B5/127—Structure or manufacture of heads, e.g. inductive
- G11B5/33—Structure or manufacture of flux-sensitive heads, i.e. for reproduction only; Combination of such heads with means for recording or erasing only
- G11B5/39—Structure or manufacture of flux-sensitive heads, i.e. for reproduction only; Combination of such heads with means for recording or erasing only using magneto-resistive devices or effects
- G11B5/3903—Structure or manufacture of flux-sensitive heads, i.e. for reproduction only; Combination of such heads with means for recording or erasing only using magneto-resistive devices or effects using magnetic thin film layers or their effects, the films being part of integrated structures
- G11B5/398—Specially shaped layers
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Thin Magnetic Films (AREA)
- Hall/Mr Elements (AREA)
Abstract
一种磁传感器包括不被磁性地钉扎的第一铁磁自由层和第二铁磁自由层以及布置在其之间的一个非磁间隔层。该第一铁磁自由层包含第一多个铁磁子层,所述第一多个铁磁子层包括与该非磁间隔层相接触的第一钴铁子层的以及与该非磁间隔层不接触的第一非晶钴硼子层。该第二铁磁自由层包含第二多个铁磁子层,所述第二多个铁磁子层包括与该非磁间隔层相接触的第二钴铁子层以及与该非磁间隔层不接触的第二非晶钴硼子层。该第一钴铁子层和第二钴铁子层中的每一个具有组成Co(100-x)Fe(x),其中x在10到90原子百分比的范围内。
Description
技术领域
信息存储设备用于检索和/或存储在计算机或其他消费者电子设备中的数据。磁硬盘驱动器是信息存储设备的一个示例,信息存储设备包括一个或多个可以进行读取和写入两个操作的磁头,而其他信息存储设备还包括磁头-有时包括不能进行写入的磁头。在此可以进行读取的磁头可以被称为“读取磁头”,即使它包括其他结构和功能,诸如用于写入的转换器,加热器,微致动器,电子研磨向导,激光二极管等。
背景技术
在现代的磁硬盘驱动设备中,每一个磁头是磁头万向架组件(HGA)的一个子组件,该磁头万向架组件一般包括带有层压弯曲部分(flexure)的悬挂组件以便将电信号输送到磁头并输送来自磁头的电信号。进而,该HGA是头堆组件(HSA)的一个子组件,该头堆组件一般包括多个HGA,致动器以及柔性印刷电路。该多个HGA附接至该致动器的各种臂。
当前读取磁头一般包括读取传感器(例如隧道磁阻或所谓的“巨”磁阻读取传感器),将该读取传感器与感应写入转换器合并以便达到从记录介质(例如盘或带)读取/向记录介质写入。由于来自记录介质的由外部施加的磁场,该读取传感器一般包括铁磁“自由层”,该铁磁自由层具有相对于铁磁“被钉扎层”发生变化的磁定向。该被钉扎层的磁定向被固定或被钉扎,以使得自由层的磁定向的变化实际上是自由层以及被钉扎层的相对磁定向的变化。典型地,在巨磁阻(GMR)磁头的情况下,该自由层与该被钉扎层相隔一个非磁金属间隔层。典型地,在隧道磁阻(TMR)磁头的情况下,该自由层与该被钉扎层相隔一个绝缘以及一般为陶瓷的阻挡层。
近年来,由于工业上对具有提高的灵敏度的读取传感器的需要,已经产生了对具有双(或更多)自由层的读取传感器的更多的兴趣,该双自由层由间隔层或阻挡层隔开。在这种读取传感器中,每一自由层的磁定向可以被偏置以使得它响应于来自记录介质的由外部施加的磁场,与间隔层或阻挡层的另一侧上的自由层的磁定向反向旋转。这种反向旋转被称为所谓的“剪刀”操作模式。
然而,这种双自由层读取传感器的性能(例如磁阻比)取决于自由层之间的耦合、它们的组成以及它们的内部结构。因此,本领域中需要一种改进的自由层组成以及结构,这种组成和结构可以提供或改进所期望的自由层耦合和/或另外提高双自由层读取传感器的性能。
附图说明
图1是能够包括本发明实施例的盘驱动器的顶部透视图。
图2是能够包括本发明实施例的盘驱动器磁头致动器的透视图。
图3是能够包括本发明实施例的HGA的底部透视图。
图4是能够包括本发明实施例的双自由层读取传感器及相关的磁偏置结构的图示。
图5描绘了根据本发明实施例的双自由层传感器层压。
图6描绘了根据本发明另一实施例的双自由层传感器层压。
图7描绘了根据本发明另一实施例的双自由层传感器层压。
具体实施方式
图1是能够包括本发明的实施例的盘驱动器100的顶部透视图。盘驱动器100包括盘驱动器底座102以及两个环形磁盘104。盘驱动器100还包括可旋转地安装在盘驱动器底座102上的转轴106以用于旋转盘104。盘104的旋转设定气流通过再循环过滤器108。在其他实施例中,盘驱动器100可以具有仅仅一个单盘,或者可替代地,超过两个盘。
盘驱动器100还包括可旋转地安装在盘驱动器底座102上的致动器116。音圈电机112使致动器116在限定的角范围内旋转以使得至少一个磁头万向架组件(HGA)114相对于一个或多个信息迹线被期望地定位于盘104的相对应的一个盘上。每一个HGA114优选地包括用于从盘104中的一个盘进行读取/向盘104中的一个盘进行写入的读取磁头150。致动器116偶尔可能在所限定的角范围内的极端角位置处被锁120锁定。
在图1的实施例中,致动器116包括三条臂,其上附接有四个HGA114,每一个HGA对于两个盘104中的一个盘的一个面。然而,在其他实施例中,取决于所包括的盘104的数量以及盘驱动器100是否被解耦,更少或更多的HGA114可以被包括。将来自于/到HGA114的电信号经由包括柔性电缆122(优选地包括前置放大器电路)以及柔性电缆架124的柔性印刷电路被输送到其他驱动电子元件。
图2是盘驱动器头致动器210的透视图,其具有布置在盘204的相对侧的两条臂213,214(示出在假想线中)。致动器臂213,214中的每一条致动器臂支持并将HGA217,218中的其中一个定位在盘204的两个相对的主表面中的每个主表面上。然而,还考虑了解耦的盘驱动器,其具有比主要盘表面更少的HGA。
图3是能够包括本发明实施例的HGA300的底部透视图。HGA300包括负荷梁302以及用于从磁盘(例如图1中的盘104)读取并向磁盘写入数据的读取磁头310。图3中的读取磁头310包括具有空气承载表面(标签310指向这个表面)以及相对顶表面(图3中不可见,因为背离观看者)的滑块衬底。滑块衬底优选地包括AlTiC,尽管也可能使用另一陶瓷或硅。读取磁头310的滑块衬底还包括包含读取转换器(图3种太小无法看见)的下降面(trailingface)。读取磁头310还可以包括可以是感应式磁写入转换器的写入转换器。
在图3中,负荷梁302的第一个目的可以是向读取磁头310提供有限的垂直顺性以便在盘旋转时遵循盘的表面的垂直波动。负荷梁302的第二个目的可以是通过预加载力抵靠邻近的盘表面来预加载读取头310的空气承载表面,该预加载力一般被称为“克力”。HGA300还可以包括层压弯曲部分304。层压弯曲部分304可以包括舌306,读取磁头310附接至所述舌306。例如,读取磁头310可以通过粘合剂(诸如UV硬化的环氧树脂、热套环氧、掺杂有导电填料的环氧树脂等)或者传统的焊剂材料被接合(bond)到层压弯曲部分304的舌306。仅一部分的舌306在图3的视图中是可见的,因为读取头310部分地遮掩了它。
在图3的实施例中,层压弯曲部分304的第一个目的可以是为头310提供顺性以便在盘旋转时遵循盘的表面的俯仰角和横摇角波动,同时限定读取磁头310和负荷梁302之间在横向的相对运动以及有关偏航轴的相对运动。层压弯曲部分304的第二个目的可以是提供多个电路径以促进向读取磁头310的信号传输/来自于读取磁头310的信号传输。对于第二种目的,层压弯曲部分304可以包括多个导电迹线,这些导电迹线被限定在层压弯曲部分304的导电(例如,铜)子层内。该导电迹线可以通过电介质层(例如聚酰亚胺)与支撑层(例如,不锈钢)绝缘。这些导电迹线可以沿着层压弯曲部分304的弯曲的尾部308从读取头310延伸到达该柔性电缆(未示出)的一部分,该柔性电缆包括接近致动器(例如,图1中的致动器116)本体的前置放大器芯片。
在图3的实施例中,负荷梁302被附接至安装板320。这些组件可以由不锈钢制成,并且可以通过例如多个点焊来制造它们相互之间的附接。在某些实施例中,悬挂组件安装板320可以包括环形的型锻凸起以通过传统的被称为型锻的附接工艺促进悬挂组件与致动器臂(例如图1中的致动器臂116的一个臂)的附接。在那种情况下,悬挂组件安装板320也可以被称为“型锻安装板”。负荷梁302、层压弯曲部分304(不具有读取磁头310)以及安装板320一起可以被称为“悬挂组件”。一旦读取磁头310被添加到悬挂组件(例如,被接合到层压弯曲部分304的舌306),该组件随后便可以被称为HGA。
图4是能够包括本发明的一个实施例的双自由层读取传感器400的简化图示,其包括双自由层传感器堆404以及邻近的软偏置结构402。在图4中显示邻近的软偏置结构402的仅一半,从而可以更清楚地描绘双自由层传感器堆404。然而,邻近的软偏置结构402的另一半优选地将会被布置在假想(虚线)线所示的占用空间403之上,与来自图4中所示的邻近的软偏置结构402的一半的双自由层传感器堆404相对。
在图4的简化图示中,磁硬偏置结构406被布置在双自由层传感器堆404的后面,其中记录介质(未示出)被布置在双自由层传感器堆404的前面(位于双自由层传感器堆404的相对侧上,而不是磁硬偏置结构406)。没有在图4中显示记录介质,因为它会阻碍查看所示的其他所有结构并且遮蔽所示的其他所有结构。
在图4的简化图示中,双自由层传感器堆404包括第一铁磁自由层410以及第二铁磁自由层420,该第一铁磁自由层410和第二铁磁自由层420由非磁间隔层或绝缘阻挡层430隔开。邻近的软偏置结构402包括第一铁磁软偏置层460,该铁磁软偏置层与第二铁磁软偏置层470由非磁耦合层480(例如钌层)隔开。
在图4的简化图示中,铁磁层中的每一个铁磁层的磁化的可能的示例方向由箭头来表示。例如,第一铁磁软偏置层460的磁化的示例方向由箭头461表示,并且第二铁磁软偏置层470的磁化的示例方向由箭头471表示。因为第一和第二铁磁软偏置层460和470通过图4的示例中的耦合层480被反铁磁耦合,箭头461和471被指向相反的方向。这种反铁磁耦合在此也可被称为负耦合。相反,铁磁耦合(即正耦合)将会趋于使得耦合层的磁化方向指向相同方向。
在图4的简化图示中,硬偏置结构406的示例磁化方向由箭头407(其在图4的图示中指向磁介质)来表示。第一铁磁自由层410的磁化的示例方向由箭头411来表示。第二铁磁自由层420的磁化的示例方向由箭头421来表示。
在图4的简化图示中,将该第一铁磁自由层和第二铁磁自由层410和420通过间隔或阻挡层430优选地铁磁(正地)耦合。因此,耦合的自由层的方向411和421将会趋于处于相同方向(例如与硬偏置结构406的磁化方向407对齐)。然而,来自软偏置结构的402的磁场趋于使第一铁磁自由层和第二铁磁自由层410,420的磁化方向411和421相对地发生偏斜,使得它们不能指向相同方向。在某些实施例中,通过硬和软偏置结构,优选地将第一铁磁自由层和第二铁磁自由层410,420的磁化方向411和421偏斜以便在静止状态(没有来自介质的由外部施加的任何磁场)相互正交。
由于第一铁磁自由层和第二铁磁自由层410,420的磁化方向411和421之间的偏斜上的差异,来自介质的由外部施加的磁场(朝向或远离硬偏置结构406)将趋于相反地旋转磁化方向411和421。响应于来自介质的由外部施加的磁场,这种相反旋转可以被称为“剪刀”操作模式。
应注意,在图4的简单示例中,考虑到的是,附加层可以存在于双自由层传感器堆404。例如,除了第一铁磁自由层和第二铁磁自由层410,420以及间隔或阻挡层430,双自由层传感器堆404可以包括封盖层(capinglayer)492和缓冲层494(例如钽,钛,铬,钌,铪,铜或者银),和/或其他层。然而,本说明书的其余部分在此着重于双自由层读取传感器的第一铁磁自由层和第二铁磁自由层的组成和结构以及它们之间的间隔或阻挡层的新颖示例,而不排除存在其他层的可能性。
图5描绘了根据本发明的一个实施例的双自由层传感器层压500。双自由层传感器层压500包括不被磁性地钉扎的第一铁磁自由层510,以及不被磁性地钉扎的第二铁磁自由层520。在某些实施例中,第一铁磁自由层510和第二铁磁自由层520各自具有在10到100埃的范围内的总厚度。在图5的实施例中,双自由层传感器层压500包括布置在第一铁磁自由层510和第二铁磁自由层520之间的非磁间隔层530。在某些优选实施例中,第一铁磁自由层510和第二铁磁自由层520正(铁磁地)耦合,而不是负(反铁磁地)耦合。这种所期望的耦合由在此所描述的新颖示例层压和子层组成提供。
在某些巨磁阻(GMR)实施例中,非磁间隔层530可以包括非铁磁金属(例如铜、银、金、钽、钌、铬、或其合金),并且优选地具有在5到100埃的范围内的厚度。在某些隧道磁阻(TMR)实施例中,非磁间隔层530可以包含绝缘阻挡层(例如氧化铝、氧化钛、或氧化镁),并且优选地具有在2.5到20埃的范围内的厚度。
在图5的实施例中,第一铁磁自由层510包含第一多个铁磁子层,所述第一多个铁磁子层包括与非磁间隔层530相接触的第一钴铁子层512以及与非磁间隔层530不接触的第一非晶钴硼子层514。同样地,第二铁磁自由层520包含第二多个铁磁子层,所述第二多个铁磁子层包括与非磁间隔层530相接触的第二钴铁子层522以及与非磁间隔层530不接触的第二非晶钴硼子层524。
在某些实施例中,第一非晶钴硼子层和第二非晶钴硼子层514,524中的每一个非晶钴硼子层可具有组成CO(100-y)B(y),其中y优选地在10到30原子百分比的范围内(例如20%)。在某些其他实施例中,第一非晶钴硼子层和第二非晶钴硼子层514,524中的每一个非晶钴硼子层可具有组成Co(100-y-z)Fe(z)B(y),其中y优选地在10到30原子百分比的范围内,并且z优选地在5到60原子百分比的范围内。在某些实施例中,第一非晶钴硼子层和第二非晶钴硼子层514,524中的每一个非晶钴硼子层可以优选地具有在5到100埃的范围内的厚度(例如50埃)。
在图5的实施例中,第一和第二钴铁子层512,522中的每一个具有组成Co(100-x)Fe(x),其中x优选地在10到90原子百分比的范围内(例如70%)。在某些实施例中,第一和第二钴铁子层512,522中的每一个可以具有优选地在3到20埃的范围内的厚度(例如最优选地在4到7埃的范围内)。在某些实施例中,上述示例层压安排以及子层厚度和/或组成可以通过非磁间隔层530在第一铁磁自由层510和第二铁磁自由层520之间有利地提供正(铁磁而不是反铁磁)耦合。
图6描绘了根据本发明的另一实施例的双自由层传感器层压600。双自由层传感器层压600包括不被磁性地钉扎的第一铁磁自由层610,以及不被磁性地钉扎的第二铁磁自由层620。在某些实施例中,第一铁磁自由层610和第二铁磁自由层620中的每一个具有在10到100埃的范围内的总厚度。在图6的实施例中,双自由层传感器层压600包括布置在第一铁磁自由层610和第二铁磁自由层620之间的非磁间隔层630。在某些优选实施例中,第一铁磁自由层610和第二铁磁自由层620正(铁磁地)耦合,而不是负(反铁磁地)耦合。
在某些GMR实施例中,非磁间隔层630可以包含非铁磁金属(例如铜、银、金、钽、钌、铬、或其合金),并且优选地具有在5到100埃的范围内的厚度。在某些TMR实施例中,非磁间隔层630可以包括绝缘阻挡层(例如氧化铝、氧化钛、或氧化镁),并且优选地具有在2.5到20埃的范围内的厚度。
在图6的实施例中,第一铁磁自由层610包含第一多个铁磁子层,所述第一多个铁磁子层包括与非磁间隔层630相接触的第一钴铁子层612以及与非磁间隔层630不接触的三个非晶钴硼子层614,616和618。同样地,第二铁磁自由层620包含第二多个铁磁子层,所述第二多个铁磁子层包括与非磁间隔层630相接触的第二钴铁子层622以及与非磁间隔层630不接触的三个非晶钴硼子层624,626和628。
在某些实施例中,非晶钴硼子层614,616,618,624,626和628中的每一个可以具有组成CO(100-y)B(y),其中y优选地在10到30原子百分比的范围内(例如20%)。在某些其他实施例中,非晶钴硼子层614,616,618,624,626和628中的每一个可以具有组成CO(100-y-z)Fe(z)B(y),其中y优选地在10到30原子百分比的范围内,并且z优选地在5到60原子百分比的范围内。在某些实施例中,非晶钴硼子层614,616,618,624,626和628中的每一个可以优选地具有在5到100埃的范围内的厚度(例如,最优选地在15到19埃的范围内)。
在图6的实施例中,非晶钴硼子层614,616,618,624,626和628与防尘层644,646,654和656交替。即,防尘层644被布置在非晶钴硼子层614和616之间,并且防尘层646被布置在非晶钴硼子层616和618之间。同样地,防尘层654被布置在非晶钴硼子层624和626之间,并且防尘层656布置在非晶钴硼子层626和628之间。
在某些实施例中,防尘层644,646,654和656中的每一个防尘层包括钌。在某些其他实施例中,防尘层644,646,654和656中的每一个防尘层包括具有组成Ni(100-z)Fe(z)的镍铁,其中z在3到10原子百分比的范围内(例如5%)。防尘层644,646,654和656中的每一个防尘层可优选地具有在0.5到10埃的范围内的防尘层厚度(例如2埃)。
在图6的实施例中,第一钴铁子层612和第二钴铁子层622中的每一个具有组成Co(100-x)Fe(x),其中x优选地在10到90原子百分比的范围内(例如70%)。在某些实施例中,第一钴铁子层612和第二钴铁子层622中的每一个可优选地具有在3到20埃的范围内的厚度(例如最优选地在4到7埃的范围内)。在某些实施例中,上述示例层压安排以及子层厚度和/或组成可以通过非磁间隔层630在第一铁磁自由层610和第二铁磁自由层620之间有利地提供正(铁磁而不是反铁磁)耦合。
图7描绘了根据本发明的另一实施例的双自由层传感器层压700。双自由层传感器层压700包括不被磁性地钉扎的第一铁磁自由层710,以及不被磁性地钉扎的第二铁磁自由层720。在某些实施例中,第一铁磁自由层710和第二铁磁自由层720中的每一个具有在10到100埃的范围内的总厚度。在图7的实施例中,双自由层传感器层压700包括布置在第一铁磁自由层710和第二铁磁自由层720之间的非磁间隔层730。在某些优选实施例中,第一铁磁自由层710和第二铁磁自由层720正(铁磁地)耦合,而不是负(反铁磁地)耦合。在某些GMR实施例中,非磁间隔层730可以包括非铁磁金属(例如铜、银、金、钽、钌、铬、或其合金),并且优选地具有在5到100埃的范围内的厚度。
在某些TMR实施例中,非磁间隔层730可以包括绝缘阻挡层(例如氧化铝、氧化钛、或氧化镁),并且优选地具有在2.5到20埃的范围内的厚度。在这种TMR实施例中,绝缘阻挡层730可以通过金属(例如镁)在氧气或氩氧混合物(例如氩和氧9∶1的混合物)的低压氛围(例如~0.5毫托)中的自然氧化而形成。具体地,在完成第一铁磁自由层710的沉积后,金属沉积和氧化的迭代循环可以被采用以形成绝缘阻挡层730。然后可以在中间温度下对绝缘阻挡层730进行短时原位退火(例如5分钟200℃)。经热处理后,可将类似的薄金属层(例如1.5埃的镁层)添加到绝缘阻挡层730以便对其封盖。接下来,绝缘阻挡层730可以被冷却到适当低于室温(例如120°K)。这种冷却可通过更改绝缘阻挡层730的主体和表面的性能及温度促进随后的第二铁磁自由层720的沉积,第二铁磁自由层720生长在绝缘阻挡层730上。在某些实施例中,这种工艺可以提高第一铁磁自由层710和第二铁磁自由层720之间的层间耦合,和/或有利地提高隧道磁阻比。
在图7的实施例中,第一铁磁自由层710包含第一多个铁磁子层,所述第一多个铁磁子层包括与非磁间隔层730相接触的第一钴铁子层712,与非磁间隔层730不接触的第一非晶钴硼子层714,铁镍合金层718以及布置于铁镍合金层718与第一非晶钴硼子层714之间的防尘层744。同样地,第二铁磁自由层720包含第二多个铁磁子层,所述第二多个铁磁子层包括与非磁间隔层730相接触的第二钴铁子层722以及与非磁间隔层730不接触的第二非晶钴硼子层724,铁镍合金层728以及布置于铁镍合金层728与第二非晶钴硼子层724之间的防尘层754。
在某些实施例中,第一非晶钴硼子层714和第二非晶钴硼子层724中的每一个可以具有组成Co(100-y)B(y),其中y优选地在10到30原子百分比的范围内(例如20%)。在某些其他实施例中,第一非晶钴硼子层714和第二非晶钴硼子层724中的每一个可以具有组成Co(100-y-z)Fe(z)B(y),其中y优选地在10到30原子百分比的范围内,并且z优选地在5到60原子百分比的范围内。在某些实施例中,第一非晶钴硼子层714和第二非晶钴硼子层724中的每一个可以优选地具有在5到100埃的范围内的厚度(例如20埃)。
在某些实施例中,防尘层744和754中的每一个防尘层包括铁或钽,并且优选地具有在0.5到10埃的范围内的防尘层厚度(例如2埃)。在某些实施例中,铁镍合金层718和728中的每一个铁镍合金层主要由镍组成并且具有在30到70埃的范围内的厚度(例如50埃)。
在图7的实施例中,第一钴铁子层712和第二钴铁子层722中的每一个具有组成Co(100-x)Fe(x),其中x优选地在10到90原子百分比的范围内(例如70%)。在某些实施例中,第一钴铁子层712和第二钴铁子层722中的每一个可以具有优选地在3到20埃的范围内的厚度(例如4埃)。在某些实施例中,上述示例层压安排以及子层厚度和/或组成可以通过非磁间隔层730在第一铁磁自由层710和第二铁磁自由层720之间有利地提供正(铁磁而不是反铁磁)耦合。
在前述说明书中,参照特定的示例性实施例描述了本发明,但本领域技术人员将认识到本发明并不局限于此。可以想到,本发明的各种特征和方面可以单独地或联合地以及可能地用于不同环境或申请。相应地,说明书和附图应被视为说明性和示例性的,而非限制性的。例如,“优选地”一词以及短语“优选地但不必需地”在此是同义使用的,以便始终如一地或可选地包括“不必需地”的意义。所述附图不一定是按比例绘制的。“包含(comprising)”,“包括(including)”以及“具有”意指开放式术语。
Claims (23)
1.一种磁传感器,包括:
不被磁性地钉扎的第一铁磁自由层;
不被磁性地钉扎的第二铁磁自由层;
布置在所述第一铁磁自由层和所述第二铁磁自由层之间的非磁间隔层;
其中,所述第一铁磁自由层包含第一多个铁磁子层,所述第一多个铁磁子层包括与所述非磁间隔层相接触的第一钴铁子层以及与所述非磁间隔层不接触的第一非晶钴硼子层;以及
其中,所述第二铁磁自由层包含第二多个铁磁子层,所述第二多个铁磁子层包括与所述非磁间隔层相接触的第二钴铁子层以及与所述非磁间隔层不接触的第二非晶钴硼子层;
其中,所述第一钴铁子层和所述第二钴铁子层中的每一个具有组成Co(100-x)Fe(x),其中x在10到90原子百分比的范围内。
2.根据权利要求1所述的磁传感器,其中,所述第一铁磁自由层和所述第二铁磁自由层铁磁地耦合。
3.根据权利要求1所述的磁传感器,其中,所述第一铁磁自由层具有第一磁化方向,并且所述第二铁磁自由层具有第二磁化方向,并且所述第一磁化方向和所述第二磁化方向在静止状态下基本上是正交的。
4.根据权利要求1所述的磁传感器,其中,所述非磁间隔层包含非铁磁金属,所述非铁磁金属具有在5到100埃的范围内的厚度并且是从由铜、银、金、钽、钌以及铬组成的组中选择的。
5.根据权利要求1所述的磁传感器,其中,所述非磁间隔层包含具有在2.5到20埃的范围内的厚度的绝缘阻挡层。
6.根据权利要求5所述的磁传感器,其中,所述绝缘阻挡层包括氧化铝、氧化钛、或氧化镁。
7.根据权利要求1所述的磁传感器,其中,所述第一非晶钴硼子层和所述第二非晶钴硼子层中的每一个具有组成Co(100-y)B(y),其中y在10到30原子百分比的范围内。
8.根据权利要求1所述的磁传感器,其中,所述第一非晶钴硼子层和所述第二非晶钴硼子层中的每一个具有组成Co(100-y-z)Fe(z)B(y),其中y在10到30原子百分比的范围内,并且z在5到60原子百分比的范围内。
9.根据权利要求1所述的磁传感器,其中,所述第一多个铁磁子层和所述第二多个铁磁子层中的每一个包括交替的非晶钴硼子层和钌防尘层,这些钌防尘层每个具有在0.5到10埃的范围内的厚度。
10.根据权利要求1所述的磁传感器,其中,所述第一多个铁磁子层和所述第二多个铁磁子层中的每一个包括交替的非晶钴硼子层和镍铁防尘层,这些镍铁防尘层每个具有在0.5到10埃的范围内的厚度以及组成Ni(100-z)Fe(z),其中z在3到10原子百分比的范围内。
11.根据权利要求1所述的磁传感器,其中,所述第一钴铁子层和所述第二钴铁子层中的每一个具有在3到20埃的范围内的厚度。
12.根据权利要求1所述的磁传感器,其中,所述第一非晶钴硼子层和所述第二非晶钴硼子层中的每一个具有在5到100埃的范围内的厚度。
13.根据权利要求1所述的磁传感器,其中,所述第一铁磁自由层和所述第二铁磁自由层中的每一个具有在10到100埃的范围内的总厚度。
14.一种磁头,包括:
一个滑块,该滑块具有存在于ABS平面中的空气承载表面(ABS)并且具有大致正交于所述ABS平面的下降面,所述滑块限定了垂直于所述下降面的纵向轴并且限定了垂直于所述ABS平面的垂直轴,并且限定了垂直于所述纵向轴和所述垂直轴两者的横轴;
磁传感器被布置在所述下降面上,所述磁传感器包含
不被磁性地钉扎的第一铁磁自由层;
不被磁性地钉扎的第二铁磁自由层;
布置在所述第一铁磁自由层和所述第二铁磁自由层之间的非磁间隔层;
其中,所述第一铁磁自由层包含第一多个铁磁子层,所述第一多个铁磁子层包括与所述非磁间隔层相接触的第一钴铁子层以及与所述非磁间隔层不接触的第一非晶钴硼子层;以及
其中,所述第二铁磁自由层包含第二多个铁磁子层,所述第二多个铁磁子层包括与所述非磁间隔层相接触的第二钴铁子层以及与所述非磁间隔层不接触的第二非晶钴硼子层;
其中,所述第一钴铁子层和所述第二钴铁子层中的每一个具有组成Co(100-x)Fe(x),其中x在10到90原子百分比的范围内;
邻近于所述磁传感器被横向布置的两个反铁磁耦合的软偏置层;以及
硬磁,所述硬磁被垂直地布置为邻近于所述磁传感器并且相比于所述传感器距离所述ABS平面被布置的更远。
15.根据权利要求14所述的磁头,其中,所述第一铁磁自由层具有第一磁化方向,并且所述第二铁磁自由层具有第二磁化方向,并且所述第一磁化方向和所述第二磁化方向在静止状态下基本上是正交的。
16.根据权利要求14所述的磁头,其中,所述非磁间隔层包括包含氧化铝、氧化钛或氧化镁的绝缘阻挡层。
17.根据权利要求14所述的磁头,其中,所述第一非晶钴硼子层和所述第二非晶钴硼子层中的每一个具有组成Co(100-y)B(y),其中y在10到30原子百分比的范围内。
18.根据权利要求14所述的磁头,其中,所述第一非晶钴硼子层和所述第二非晶钴硼子层中的每一个具有组成Co(100-y-z)Fe(z)B(y),其中y在10到30原子百分比的范围内,并且z在5到60原子百分比的范围内。
19.根据权利要求14所述的磁头,其中,所述第一多个铁磁子层和所述第二多个铁磁子层中的每一个包括交替的非晶钴硼子层和钌防尘层,所述钌防尘层每个具有在0.5到10埃的范围内的厚度。
20.根据权利要求14所述的磁头,其中,所述第一多个铁磁子层和所述第二多个铁磁子层中的每一个包括交替的非晶钴硼子层和镍铁防尘层,这些镍铁防尘层每个具有在0.5到10埃的范围内的厚度以及组成Ni(100-z)Fe(z),其中z在3到10原子百分比的范围内。
21.根据权利要求14所述的磁头,其中,所述第一钴铁子层和所述第二钴铁子层中的每一个具有在3到20埃的范围内的厚度。
22.根据权利要求14所述的磁头,其中,所述第一非晶钴硼子层和所述第二非晶钴硼子层中的每一个具有在5到100埃的范围内的厚度。
23.一种盘驱动器,包括:
盘驱动器底座;
转轴,所述转轴被附接至所述盘驱动器底座并且限定了转轴旋转轴线;
旋转地安装在所述转轴上盘;
附接至所述盘驱动器底座的磁头致动器;
附接至所述磁头致动器的磁头;所述磁头包括
滑块,所述滑块具有面朝所述盘并且存在于ABS平面中的空气承载表面即ABS并且具有大致正交于所述ABS平面的下降面,所述滑块限定了垂直于所述下降面的纵向轴并且限定了垂直于所述ABS平面并且大致平行于所述转轴旋转轴线的垂直轴,并且限定了垂直于所述纵向轴和所述垂直轴两者的横轴;
布置在该下降面上的磁传感器,该磁传感器包括
不被磁性地钉扎的第一铁磁自由层;
不被磁性地钉扎的第二铁磁自由层;
布置在所述第一铁磁自由层和所述第二铁磁自由层之间的非磁间隔层;
其中,所述第一铁磁自由层包含第一多个铁磁子层,所述第一多个铁磁子层包括与所述非磁间隔层相接触的第一钴铁子层以及与所述非磁间隔层不接触的第一非晶钴硼子层;以及
其中,所述第二铁磁自由层包含第二多个铁磁子层,所述第二多个铁磁子层包括与所述非磁间隔层相接触的第二钴铁子层以及与所述非磁间隔层不接触的第二非晶钴硼子层;
其中,所述第一钴铁子层和所述第二钴铁子层中的每一个具有组成Co(100-x)Fe,其中x在10到90原子百分比的范围内;
邻近于所述磁传感器被横向布置的两个反铁磁耦合的软偏置层;以及
硬磁,所述硬磁被垂直地布置为邻近于所述磁传感器并且相比于所述传感器距离所述ABS平面被布置的更远。
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US14/508,697 US9007725B1 (en) | 2014-10-07 | 2014-10-07 | Sensor with positive coupling between dual ferromagnetic free layer laminates |
US14/508,697 | 2014-10-07 |
Publications (1)
Publication Number | Publication Date |
---|---|
CN105489229A true CN105489229A (zh) | 2016-04-13 |
Family
ID=52782274
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201510640808.0A Pending CN105489229A (zh) | 2014-10-07 | 2015-09-30 | 具有在双铁磁自由层层压之间的正耦合的传感器 |
Country Status (2)
Country | Link |
---|---|
US (1) | US9007725B1 (zh) |
CN (1) | CN105489229A (zh) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN113196078A (zh) * | 2019-08-28 | 2021-07-30 | 西部数据技术公司 | 双自由层tmr磁场传感器 |
CN113823330A (zh) * | 2020-06-19 | 2021-12-21 | 西部数据技术公司 | 横向偏置强度增强 |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9513349B2 (en) * | 2014-02-06 | 2016-12-06 | HGST Netherlands B.V. | Scissor type magnetic sensor with high magnetic moment bias structure for reduced signal asymmetry |
US9449621B1 (en) | 2015-03-26 | 2016-09-20 | Western Digital (Fremont), Llc | Dual free layer magnetic reader having a rear bias structure having a high aspect ratio |
US10224064B2 (en) | 2016-01-04 | 2019-03-05 | Seagate Technology Llc | Recessed hardmask used to form HAMR NFT heat sink |
US10475564B2 (en) * | 2016-06-29 | 2019-11-12 | Taiwan Semiconductor Manufacturing Company, Ltd. | Perpendicularly magnetized ferromagnetic layers having an oxide interface allowing for improved control of oxidation |
Family Cites Families (581)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6078479A (en) | 1993-08-10 | 2000-06-20 | Read-Rite Corporation | Magnetic tape head with flux sensing element |
US5434826A (en) | 1994-09-26 | 1995-07-18 | Read-Rite Corporation | Multilayer hard bias films for longitudinal biasing in magnetoresistive transducer |
US5576914A (en) | 1994-11-14 | 1996-11-19 | Read-Rite Corporation | Compact read/write head having biased GMR element |
US6219205B1 (en) | 1995-10-10 | 2001-04-17 | Read-Rite Corporation | High density giant magnetoresistive transducer with recessed sensor |
US5801531A (en) | 1996-01-18 | 1998-09-01 | Read-Rite Corporation | Apparatus and method for testing magnetic heads using translational slides and a rotatable arm |
JPH09235669A (ja) | 1996-02-27 | 1997-09-09 | Read Rite S M I Kk | 酸化膜の形成方法および電子デバイス |
US5764451A (en) | 1996-03-28 | 1998-06-09 | Read-Rite Corporation | Multi-tapped coil having tapped segments casaded for amplification for improving signal-to-noise ratio |
US5793550A (en) | 1996-04-23 | 1998-08-11 | Read-Rite Corporation | Magnetoresistive head using sense currents of opposite polarities |
US6103073A (en) | 1996-07-15 | 2000-08-15 | Read-Rite Corporation | Magnetic thin film head zero throat pole tip definition |
US6058094A (en) | 1996-07-30 | 2000-05-02 | Seagate Technology Inc. | Flying magneto-optical head with a steerable mirror |
US6034938A (en) | 1996-07-30 | 2000-03-07 | Seagate Technology, Inc. | Data storage system having an optical processing flying head |
US6081499A (en) | 1997-05-05 | 2000-06-27 | Seagate Technology, Inc. | Magneto-optical data storage system having an optical-processing flying head |
US6178150B1 (en) | 1996-07-30 | 2001-01-23 | Seagate Technology Inc. | Offset optics for use with optical heads |
US5793279A (en) | 1996-08-26 | 1998-08-11 | Read-Rite Corporation | Methods and compositions for optimizing interfacial properties of magnetoresistive sensors |
US6307715B1 (en) | 1996-08-30 | 2001-10-23 | Read-Rite Corporation | Head suspension having reduced torsional vibration |
JPH10143820A (ja) | 1996-11-08 | 1998-05-29 | Read Rite S M I Kk | インダクティブ/mr複合型薄膜磁気ヘッド |
JPH10188222A (ja) | 1996-12-20 | 1998-07-21 | Read Rite S M I Kk | 複合型薄膜磁気ヘッド |
US5758406A (en) | 1997-02-07 | 1998-06-02 | Read-Rite Corporation | Method for assembling and electrical testing of a magnetic head |
US6173486B1 (en) | 1997-03-04 | 2001-01-16 | Read-Rite Corporation | Thin film magnetic head with self-aligned pole tips |
US5859754A (en) | 1997-04-03 | 1999-01-12 | Read-Rite Corporation | Magnetoresistive transducer having a common magnetic bias using assertive and complementary signals |
US6032353A (en) | 1997-05-15 | 2000-03-07 | Read-Rite Corporation | Magnetic head with low stack height and self-aligned pole tips |
JPH113510A (ja) | 1997-06-10 | 1999-01-06 | Read Rite S M I Kk | 複合型薄膜磁気ヘッド |
US6166891A (en) | 1997-06-30 | 2000-12-26 | Read-Rite Corporation | Magnetoresistive sensor for high temperature environment using iridium manganese |
US5966800A (en) | 1997-07-28 | 1999-10-19 | Read-Rite Corporation | Method of making a magnetic head with aligned pole tips and pole layers formed of high magnetic moment material |
US6775902B1 (en) | 1997-07-28 | 2004-08-17 | Western Digital (Fremont) Inc. | Method of making a magnetic head with aligned pole tips |
US5966591A (en) | 1997-08-07 | 1999-10-12 | Read-Rite Corporation | Method and tool for handling micro-mechanical structures |
US6073338A (en) | 1997-08-19 | 2000-06-13 | Read-Rite Corporation | Thin film read head with coplanar pole tips |
US6188549B1 (en) | 1997-12-10 | 2001-02-13 | Read-Rite Corporation | Magnetoresistive read/write head with high-performance gap layers |
US6275354B1 (en) | 1998-01-21 | 2001-08-14 | Read-Rite Corporation | Magnetic head with a toroidal coil encompassing only one yoke layer |
US5996213A (en) | 1998-01-30 | 1999-12-07 | Read-Rite Corporation | Thin film MR head and method of making wherein pole trim takes place at the wafer level |
US6108166A (en) | 1998-03-12 | 2000-08-22 | Read-Rite Corporation | Current-pinned spin valve sensor |
US6043959A (en) | 1998-03-23 | 2000-03-28 | Read-Rite Corporation | Inductive write head formed with flat yoke and merged with magnetoresistive read transducer |
US6136166A (en) | 1998-03-27 | 2000-10-24 | Read-Rite Corporation | Apparatus for producing a uniform magnetic field over a large surface area of a wafer |
US6399179B1 (en) | 1998-04-03 | 2002-06-04 | Intri-Plex Technologies, Inc. | Base plate for suspension assembly in hard disk drive with stress isolation |
US6046885A (en) | 1998-04-03 | 2000-04-04 | Intri-Plex Technologies, Inc. | Base plate suspension assembly in a hard disk drive with step in flange |
US6137662A (en) | 1998-04-07 | 2000-10-24 | Read-Rite Corporation | Magnetoresistive sensor with pinned SAL |
US6034851A (en) | 1998-04-07 | 2000-03-07 | Read-Rite Corporation | Shorting bar and test clip for protecting magnetic heads from damage caused by electrostatic discharge during manufacture |
US6049650A (en) | 1998-04-17 | 2000-04-11 | Seagate Technology, Inc. | Structure for micro-machine optical tooling and method for making and using |
US6055138A (en) | 1998-05-06 | 2000-04-25 | Read-Rite Corporation | Thin film pedestal pole tips write head having narrower lower pedestal pole tip |
US6178066B1 (en) | 1998-05-27 | 2001-01-23 | Read-Rite Corporation | Method of fabricating an improved thin film device having a small element with well defined corners |
JPH11354859A (ja) | 1998-06-05 | 1999-12-24 | Read Rite Smi Kk | 磁気抵抗素子と磁気ヘッド |
US6018441A (en) | 1998-06-08 | 2000-01-25 | Read-Rite Corporation | Disk drive pivot bearing and actuator arm assembly |
JPH11354860A (ja) | 1998-06-10 | 1999-12-24 | Read Rite Smi Kk | スピンバルブ磁気変換素子及び磁気ヘッド |
US6229782B1 (en) | 1998-07-06 | 2001-05-08 | Read-Rite Corporation | High numerical aperture optical focusing device for use in data storage systems |
US6377535B1 (en) | 1998-07-06 | 2002-04-23 | Read-Rite Corporation | High numerical aperture optical focusing device having a conical incident facet and a parabolic reflector for use in data storage systems |
US6212153B1 (en) | 1998-07-06 | 2001-04-03 | Read-Rite Corporation | High NA solid catadioptric focusing device having a flat kinoform phase profile |
US6130779A (en) | 1998-07-06 | 2000-10-10 | Read-Rite Corporation | Near field magneto-optical head made using wafer processing techniques |
US6175476B1 (en) | 1998-08-18 | 2001-01-16 | Read-Rite Corporation | Synthetic spin-valve device having high resistivity anti parallel coupling layer |
US6445536B1 (en) | 1998-08-27 | 2002-09-03 | Read-Rite Corporation | Dielectric stencil-defined write head for MR, GMR, and spin valve high density recording heads |
JP2000091667A (ja) | 1998-09-09 | 2000-03-31 | Read Rite Smi Kk | スピンバルブ磁気抵抗センサ及び薄膜磁気ヘッド |
US6181525B1 (en) | 1998-09-23 | 2001-01-30 | Read-Rite Corporation | Read/write head with a limited range of motion relative to a load beam |
JP2000113437A (ja) | 1998-10-08 | 2000-04-21 | Read Rite Smi Kk | 磁気ヘッド装置の製造方法、磁気ヘッド装置、並びに、磁気ヘッド装置の中間製造物 |
US6330136B1 (en) | 1998-10-14 | 2001-12-11 | Read-Rite Corporation | Magnetic read sensor with SDT tri-layer and method for making same |
US6137661A (en) | 1998-10-19 | 2000-10-24 | Read-Rite Corporation | System for providing a magnetoresistive head having higher efficiency |
US6118638A (en) | 1998-11-02 | 2000-09-12 | Read-Rite Corporation | CPP magnetoresistive device and method for making same |
US6252743B1 (en) | 1998-11-02 | 2001-06-26 | Read-Rite Corporation | Read/write positioning arm with interspaced amplifier chips |
US6333830B2 (en) | 1998-11-09 | 2001-12-25 | Read-Rite Corporation | Low resistance coil structure for high speed writer |
US6198609B1 (en) | 1998-11-09 | 2001-03-06 | Read-Rite Corporation | CPP Magnetoresistive device with reduced edge effect and method for making same |
JP2000149233A (ja) | 1998-11-11 | 2000-05-30 | Read Rite Smi Kk | 磁気ヘッド装置、並びに、その製造方法 |
US6160684A (en) | 1998-11-12 | 2000-12-12 | Read-Rite Corporation | Head suspension having tabs and force isolation welds for gram load reduction during swaging |
US6233116B1 (en) | 1998-11-13 | 2001-05-15 | Read-Rite Corporation | Thin film write head with improved laminated flux carrying structure and method of fabrication |
US6452765B1 (en) | 1998-11-18 | 2002-09-17 | Read-Rite Corporation | CoNbTi as high resistivity SAL material for high-density MR |
US6221218B1 (en) | 1998-11-23 | 2001-04-24 | Read-Rite Corporation | Method of forming an inductive write head for magnetic data storage media |
US6190764B1 (en) | 1998-11-23 | 2001-02-20 | Read-Rite Corporation | Inductive write head for magnetic data storage media |
JP2000163713A (ja) | 1998-11-27 | 2000-06-16 | Read Rite Smi Kk | 薄膜磁気ヘッドの上部磁極層の形成方法、段差を有する表面の段差底部上に高アスペクト比微細ブロックパターンを形成する方法、並びに、薄膜磁気ヘッド |
US6633464B2 (en) | 1998-12-09 | 2003-10-14 | Read-Rite Corporation | Synthetic antiferromagnetic pinned layer with Fe/FeSi/Fe system |
US6025988A (en) | 1998-12-17 | 2000-02-15 | Read-Rite Corporation | Interconnect adapter and head suspension assembly |
US6258468B1 (en) | 1998-12-22 | 2001-07-10 | Read-Rite Corporation | AMR read sensor structure and method with high magnetoresistive coefficient |
US6462920B1 (en) | 1998-12-23 | 2002-10-08 | Read-Rite Corporation | Method and system for reducing MR head instability |
US6204999B1 (en) | 1998-12-23 | 2001-03-20 | Read-Rite Corporation | Method and system for providing a write head having a conforming pole structure |
US6222707B1 (en) | 1998-12-28 | 2001-04-24 | Read-Rite Corporation | Bottom or dual spin valve having a seed layer that results in an improved antiferromagnetic layer |
US6215625B1 (en) | 1999-01-04 | 2001-04-10 | Read-Rite Corporation | Apparatus and method for adhesive bridge suspension attachment |
US6185077B1 (en) | 1999-01-06 | 2001-02-06 | Read-Rite Corporation | Spin valve sensor with antiferromagnetic and magnetostatically coupled pinning structure |
JP2000207714A (ja) | 1999-01-13 | 2000-07-28 | Read Rite Smi Kk | 磁気抵抗効果型薄膜磁気ヘッド、並びに、その製造方法 |
US6418000B1 (en) | 1999-01-21 | 2002-07-09 | Read-Rite Corporation | Dual, synthetic spin valve sensor using current pinning |
US6277505B1 (en) | 1999-01-21 | 2001-08-21 | Read-Rite Corporation | Read sensor with improved thermal stability and manufacturing method therefor |
US6094803A (en) | 1999-01-21 | 2000-08-01 | Read-Rite Corporation | Wafer processing techniques for near field magneto-optical head |
JP2000222709A (ja) | 1999-02-01 | 2000-08-11 | Read Rite Smi Kk | スピンバルブ磁気抵抗センサ及び薄膜磁気ヘッド |
US6351355B1 (en) | 1999-02-09 | 2002-02-26 | Read-Rite Corporation | Spin valve device with improved thermal stability |
US6801411B1 (en) | 1999-02-10 | 2004-10-05 | Western Digital (Fremont), Inc. | Dual stripe spin valve sensor without antiferromagnetic pinning layer |
US6629357B1 (en) | 1999-02-10 | 2003-10-07 | Read-Rite Smi Corp. | Method of magnetic head manufacture |
US6178070B1 (en) | 1999-02-11 | 2001-01-23 | Read-Rite Corporation | Magnetic write head and method for making same |
US6016290A (en) | 1999-02-12 | 2000-01-18 | Read-Rite Corporation | Read/write head with shifted waveguide |
US6404706B1 (en) | 1999-02-12 | 2002-06-11 | Read-Rite Corporation | Laser mounting for a thermally assisted GMR head |
JP2000251223A (ja) | 1999-02-23 | 2000-09-14 | Read Rite Smi Kk | スピンバルブ磁気抵抗センサ及び薄膜磁気ヘッド |
US6134089A (en) | 1999-03-11 | 2000-10-17 | Read-Rite Corporation | Current perpendicular to plane magnetoresistive device with low resistance lead |
US6765756B1 (en) | 1999-03-12 | 2004-07-20 | Western Digital (Fremont), Inc. | Ultra-short yoke and ultra-low stack height writer and method of fabrication |
US6691226B1 (en) | 1999-03-16 | 2004-02-10 | Western Digital Ventures, Inc. | Computer system with disk drive having private key validation means for enabling features |
US6532823B1 (en) | 1999-03-18 | 2003-03-18 | Read-Rite Corporation | Insulator layers for magnetoresistive transducers |
US6198608B1 (en) | 1999-03-18 | 2001-03-06 | Read-Rite Corporation | MR sensor with blunt contiguous junction and slow-milling-rate read gap |
US6417998B1 (en) | 1999-03-23 | 2002-07-09 | Read-Rite Corporation | Ultra small advanced write transducer and method for making same |
US6297955B1 (en) | 1999-03-31 | 2001-10-02 | Western Digital Ventures, Inc. | Host assembly for an integrated computer module |
US6411522B1 (en) | 1999-04-01 | 2002-06-25 | Western Digital Ventures, Inc. | Integrated computer module with EMI shielding plate |
US6201673B1 (en) | 1999-04-02 | 2001-03-13 | Read-Rite Corporation | System for biasing a synthetic free layer in a magnetoresistance sensor |
US6445553B2 (en) | 1999-04-02 | 2002-09-03 | Read-Rite Corporation | Method and system for fabricating a high density magnetoresistive device |
US6359779B1 (en) | 1999-04-05 | 2002-03-19 | Western Digital Ventures, Inc. | Integrated computer module with airflow accelerator |
US6282056B1 (en) | 1999-04-08 | 2001-08-28 | Read-Rite Corporation | Tapered stitch pole writer for high density magnetic recording |
US6657816B1 (en) | 1999-04-09 | 2003-12-02 | Ronald A. Barr | Thin film inductive read/write head with a sloped pole |
US6490125B1 (en) | 1999-04-09 | 2002-12-03 | Read-Rite Corporation | Thin film write head with improved yoke to pole stitch |
US6654195B1 (en) | 1999-04-27 | 2003-11-25 | Western Digital Ventures, Inc. | Disk drive having a register set for providing real time position variables to a host |
US6829819B1 (en) | 1999-05-03 | 2004-12-14 | Western Digital (Fremont), Inc. | Method of forming a magnetoresistive device |
US6944938B1 (en) | 1999-05-03 | 2005-09-20 | Western Digital (Fremont), Inc. | Method of forming a magnetoresistive device |
JP2000315302A (ja) | 1999-05-06 | 2000-11-14 | Read Rite Smi Kk | 複合型薄膜磁気ヘッド |
US6424505B1 (en) | 1999-05-06 | 2002-07-23 | Read-Rite Corporation | Method and system for providing electrostatic discharge protection for flex-on suspension, trace-suspension assembly, or cable-on suspension |
US6271604B1 (en) | 1999-05-10 | 2001-08-07 | Western Digital Corporation | Integrated computer module having a data integrity latch |
US6349014B1 (en) | 1999-05-14 | 2002-02-19 | Read-Rite Corporation | Magnetic read/write device with insulated coil layer recessed into pole |
US6410170B1 (en) | 1999-05-20 | 2002-06-25 | Read-Rite Corporation | High resistivity FeXN sputtered films for magnetic storage devices and method of fabrication |
US6296955B1 (en) | 1999-05-24 | 2001-10-02 | Read-Rite Corporation | High moment and high permeability transducer structures and formation |
US6400526B2 (en) | 1999-05-26 | 2002-06-04 | Read-Rite Corporation | Advanced writer for chip-on-load beam |
US6193584B1 (en) | 1999-05-27 | 2001-02-27 | Read-Rite Corporation | Apparatus and method of device stripe height control |
US6466401B1 (en) | 1999-06-02 | 2002-10-15 | Read-Rite Corporation | Thin film write head with interlaced coil winding and method of fabrication |
US6762910B1 (en) | 1999-06-03 | 2004-07-13 | Western Digital (Fremont), Inc. | Data storage and retrieval apparatus with thin film read head having inset extra gap insulation layer and method of fabrication |
US6433970B1 (en) | 1999-06-07 | 2002-08-13 | Read-Rite Corporation | Structure and method for redeposition free thin film CPP read sensor fabrication |
US6389499B1 (en) | 1999-06-09 | 2002-05-14 | Western Digital Ventures, Inc. | Integrated computer module |
US6330137B1 (en) | 1999-06-11 | 2001-12-11 | Read-Rite Corporation | Magnetoresistive read sensor including a carbon barrier layer and method for making same |
US6469877B1 (en) | 1999-06-15 | 2002-10-22 | Read-Rite Corporation | Spin valve device with improved exchange layer defined track width and method of fabrication |
US6353511B1 (en) | 1999-06-15 | 2002-03-05 | Read-Rite Corporation | Thin film write head for improved high speed and high density recording |
US6466402B1 (en) | 1999-06-18 | 2002-10-15 | Read-Rite Corporation | Compact MR write structure |
US6181485B1 (en) | 1999-06-23 | 2001-01-30 | Read-Rite Corporation | High numerical aperture optical focusing device for use in data storage systems |
US6185051B1 (en) | 1999-06-23 | 2001-02-06 | Read-Rite Corporation | High numerical aperture optical focusing device for use in data storage systems |
US6310746B1 (en) | 1999-06-23 | 2001-10-30 | Read-Rite Corporation | Piezoelectric vibration damping for disk drives |
US6185081B1 (en) | 1999-06-30 | 2001-02-06 | Read-Rite Corporation | Bias layers which are formed on underlayers promoting in-plane alignment of the c-axis of cobalt used in magnetoresistive transducers |
US7027268B1 (en) | 1999-07-08 | 2006-04-11 | Western Digital (Fremont), Inc. | Method and system for providing a dual spin filter |
US6687098B1 (en) | 1999-07-08 | 2004-02-03 | Western Digital (Fremont), Inc. | Top spin valve with improved seed layer |
US6483662B1 (en) | 1999-07-09 | 2002-11-19 | Read-Rite Corporation | High density multi-coil magnetic write head having a reduced yoke length and short flux rise time |
US7196880B1 (en) | 1999-07-19 | 2007-03-27 | Western Digital (Fremont), Inc. | Spin valve sensor having a nonmagnetic enhancement layer adjacent an ultra thin free layer |
US6304414B1 (en) | 1999-07-20 | 2001-10-16 | Read-Rite Corporation | Thin film magnetic write head having an ultra-low stack height |
US6611398B1 (en) | 1999-08-09 | 2003-08-26 | Quantum Corporation | Tape head with support bars |
US6369983B1 (en) | 1999-08-13 | 2002-04-09 | Read-Rite Corporation | Write head having a dry-etchable antireflective intermediate layer |
US6396660B1 (en) | 1999-08-23 | 2002-05-28 | Read-Rite Corporation | Magnetic write element having a thermally dissipative structure |
US6381095B1 (en) | 1999-08-31 | 2002-04-30 | Read-Rite Corporation | High performance thin film magnetic write element having high Bsat poles and method for making same |
US6317290B1 (en) | 1999-08-31 | 2001-11-13 | Read-Rite Corporation | Advance pole trim writer with moment P1 and low apex angle |
US6452742B1 (en) | 1999-09-02 | 2002-09-17 | Read-Rite Corporation | Thin film write having reduced resistance conductor coil partially recessed within middle coat insulation |
US6496330B1 (en) | 1999-09-09 | 2002-12-17 | Read-Rite Corporation | Magnetic write head having a splitcoil structure |
US6421212B1 (en) | 1999-09-21 | 2002-07-16 | Read-Rite Corporation | Thin film read head structure with improved bias magnet-to-magnetoresistive element interface and method of fabrication |
US6356412B1 (en) | 1999-09-30 | 2002-03-12 | Read-Rite Corporation | Air bearing facilitating load/unload of a magnetic read/write head |
US6317297B1 (en) | 1999-10-06 | 2001-11-13 | Read-Rite Corporation | Current pinned dual spin valve with synthetic pinned layers |
US6310750B1 (en) | 1999-10-20 | 2001-10-30 | Read-Rite Corporation | Disk drive actuator arm with microactuated read/write head positioning |
US6381105B1 (en) | 1999-10-22 | 2002-04-30 | Read-Rite Corporation | Hybrid dual spin valve sensor and method for making same |
JP2001126219A (ja) | 1999-10-28 | 2001-05-11 | Read Rite Corp | スピンバルブ型磁気抵抗センサ及び薄膜磁気ヘッド |
US6448765B1 (en) | 1999-10-28 | 2002-09-10 | Read-Rite Corporation | Microscopic tips having stable magnetic moments and disposed on cantilevers for sensing magnetic characteristics of adjacent structures |
US6456465B1 (en) | 1999-11-09 | 2002-09-24 | Read-Rite Corporation | Vertical giant magnetoresistance sensor using a recessed shield |
US6661621B1 (en) | 1999-11-19 | 2003-12-09 | Read-Rite Smi Corp. | Compound thin film magnetic head |
US6447935B1 (en) | 1999-11-23 | 2002-09-10 | Read-Rite Corporation | Method and system for reducing assymetry in a spin valve having a synthetic pinned layer |
US6479096B1 (en) | 1999-12-03 | 2002-11-12 | Read-Rite Corporation | Method for manufacturing a GMR spin valve having a smooth interface between magnetic and non-magnetic layers |
US6650506B1 (en) | 1999-12-15 | 2003-11-18 | Patrick Risse | Double-sided disk storage using a single configuration of magnetoresistive head |
US6437945B1 (en) | 1999-12-28 | 2002-08-20 | Read-Rite Corporation | Airflow assisted ramp loading and unloading of sliders in hard disk drives |
US7046490B1 (en) | 2000-01-06 | 2006-05-16 | Western Digital (Fremont), Inc. | Spin valve magnetoresistance sensor and thin film magnetic head |
US6404601B1 (en) | 2000-01-25 | 2002-06-11 | Read-Rite Corporation | Merged write head with magnetically isolated poletip |
US6417999B1 (en) | 2000-02-04 | 2002-07-09 | Read-Rite Corporation | Magnetoresistive head stabilized structure and method of fabrication thereof |
US7023658B1 (en) | 2000-02-08 | 2006-04-04 | Western Digital (Fremont), Inc. | Submicron track-width pole-tips for electromagnetic transducers |
US6466418B1 (en) | 2000-02-11 | 2002-10-15 | Headway Technologies, Inc. | Bottom spin valves with continuous spacer exchange (or hard) bias |
US6721149B1 (en) | 2000-02-11 | 2004-04-13 | Western Digital (Fremont), Inc. | Tunneling magnetoresistance spin-valve read sensor with LaNiO3 spacer |
US6724569B1 (en) | 2000-02-16 | 2004-04-20 | Western Digital (Fremont), Inc. | Thin film writer with multiplayer write gap |
US6433965B1 (en) | 2000-03-02 | 2002-08-13 | Read-Rite Corporation | Laminated carbon-containing overcoats for information storage system transducers |
US6445542B1 (en) | 2000-03-06 | 2002-09-03 | Read-Rite Corporation | Air bearing slider |
US7059868B1 (en) | 2000-03-07 | 2006-06-13 | Western Digital (Fremont), Inc. | Connection of trace circuitry in a computer disk drive system |
US6445554B1 (en) | 2000-03-10 | 2002-09-03 | Read-Rite Corporation | Method and system for providing edge-junction TMR for high areal density magnetic recording |
US6353318B1 (en) | 2000-03-10 | 2002-03-05 | Read-Rite Corporation | Magnetoresistive sensor having hard biased current perpendicular to the plane sensor |
JP2001308411A (ja) | 2000-04-11 | 2001-11-02 | Read Rite Corp | スピンバルブ型磁気抵抗センサおよび薄膜磁気ヘッド |
US6433968B1 (en) | 2000-05-02 | 2002-08-13 | Read-Rite Corporation | Merged read/write head and method of fabricating same |
US6552874B1 (en) | 2000-05-17 | 2003-04-22 | Read-Rite Corporation | Shared pole magnetic read-write head for achieving optimized erase band width and method of fabricating the same |
US6496334B1 (en) | 2000-05-26 | 2002-12-17 | Read-Rite Corportion | Data storage and retrieval apparatus with thin film read head having planarized extra gap and shield layers and method of fabrication thereof |
US6700759B1 (en) | 2000-06-02 | 2004-03-02 | Western Digital (Fremont), Inc. | Narrow track width magnetoresistive sensor and method of making |
US6674610B1 (en) | 2000-06-16 | 2004-01-06 | Western Digital (Fremont), Inc. | Thin film write head with universal coil design |
US6515573B1 (en) | 2000-06-19 | 2003-02-04 | Read-Rite Corporation | Method and system for providing edge-junction TMR utilizing a hard magnet as a pinned layer |
US6430806B1 (en) | 2000-06-23 | 2002-08-13 | Read-Rite Corporation | Method for manufacturing an inductive write element employing bi-layer photoresist to define a thin high moment pole pedestal |
US6512657B2 (en) | 2000-07-17 | 2003-01-28 | Read-Rite Corporation | Head suspension having gram load change reduction and method of assembly |
US6618223B1 (en) | 2000-07-18 | 2003-09-09 | Read-Rite Corporation | High speed, high areal density inductive writer |
JP2002050011A (ja) * | 2000-08-03 | 2002-02-15 | Nec Corp | 磁気抵抗効果素子、磁気抵抗効果ヘッド、磁気抵抗変換システム及び磁気記録システム |
US6512661B1 (en) | 2000-08-10 | 2003-01-28 | Read-Rite Corporation | Vertical giant magnetoresistance sensor utilizing an insulating bias layer |
WO2002025642A1 (en) | 2000-09-19 | 2002-03-28 | Seagate Technology Llc | Giant magnetoresistive sensor having self-consistent demagnetization fields |
US6859997B1 (en) | 2000-09-19 | 2005-03-01 | Western Digital (Fremont), Inc. | Method for manufacturing a magnetic write element |
US6989962B1 (en) | 2000-09-26 | 2006-01-24 | Western Digital (Fremont), Inc. | Inductive write head having high magnetic moment poles and low magnetic moment thin layer in the back gap, and methods for making |
US6801408B1 (en) | 2000-11-02 | 2004-10-05 | Western Digital (Fremont), Inc. | Data storage and retrieval apparatus with thin film read head having a planar sensor element and an extra gap and method of fabrication thereof |
US6807332B1 (en) | 2000-11-06 | 2004-10-19 | Western Digital (Fremont), Inc. | Piezoelectric actuated optical switch |
US6958885B1 (en) | 2000-12-21 | 2005-10-25 | Western Digital (Fremont), Inc. | Insulation layer structure for inductive write heads and method of fabrication |
US6785955B1 (en) | 2001-01-23 | 2004-09-07 | Western Digital (Fremont), Inc. | Method for providing pedestal-defined zero throat writer |
US6577470B1 (en) | 2001-01-25 | 2003-06-10 | Read-Rite Corporation | Method and system for providing a tape head subassembly structure having an integrated wear bar and outrigger rail |
US6661625B1 (en) | 2001-02-20 | 2003-12-09 | Kyusik Sin | Spin-dependent tunneling sensor with low resistance metal oxide tunnel barrier |
US6888184B1 (en) | 2001-02-23 | 2005-05-03 | Western Digital (Fremont), Inc. | Shielded magnetic ram cells |
US6552928B1 (en) | 2001-02-23 | 2003-04-22 | Read-Rite Corporation | Read-write control circuit for magnetic tunnel junction MRAM |
US6803615B1 (en) | 2001-02-23 | 2004-10-12 | Western Digital (Fremont), Inc. | Magnetic tunnel junction MRAM with improved stability |
US6873547B1 (en) | 2001-02-23 | 2005-03-29 | Read Rite Corporation | High capacity MRAM memory array architecture |
US6687178B1 (en) | 2001-02-23 | 2004-02-03 | Western Digital (Fremont), Inc. | Temperature dependent write current source for magnetic tunnel junction MRAM |
US6721203B1 (en) | 2001-02-23 | 2004-04-13 | Western Digital (Fremont), Inc. | Designs of reference cells for magnetic tunnel junction (MTJ) MRAM |
US6700738B1 (en) | 2001-03-16 | 2004-03-02 | Kyusik Sin | Read/write head coil tap having upper and lower portions |
US7289303B1 (en) | 2001-04-05 | 2007-10-30 | Western Digital (Fremont), Llc | Spin valve sensors having synthetic antiferromagnet for longitudinal bias |
US6829160B1 (en) | 2001-04-06 | 2004-12-07 | Western Digital (Fremont), Inc. | Magnetic ram cell with amplification circuitry and MRAM memory array formed using the MRAM cells |
US6515791B1 (en) | 2001-04-06 | 2003-02-04 | Read-Rite Corporation | Active reflection and anti-reflection optical switch |
US6760196B1 (en) | 2001-12-12 | 2004-07-06 | Western Digital, Inc. | Microactuator with offsetting hinges and method for high-resolution positioning of magnetic read/write head |
US6376964B1 (en) | 2001-05-16 | 2002-04-23 | Read-Rite Corporation | Collocated rotating flexure microactuator for dual-stage servo in disk drives |
US6704158B2 (en) | 2001-06-05 | 2004-03-09 | Western Digital (Fremont), Inc. | Shear mode multilayered collocated micro-actuator for dual-stage servo controllers in disk drives |
US6870712B2 (en) | 2001-06-05 | 2005-03-22 | Western Digital (Fremont), Inc. | Inductive writer with flat top pole and pedestal defined zero throat |
US6798616B1 (en) | 2001-07-10 | 2004-09-28 | Western Digital (Fremont), Inc. | Write head architecture for improved manufacturability |
US7349179B1 (en) | 2001-07-16 | 2008-03-25 | Western Digital (Fremont), Llc | Write head for improved manufacturability larger write field and reduced adjacent track erasure |
JP4024499B2 (ja) * | 2001-08-15 | 2007-12-19 | 株式会社東芝 | 磁気抵抗効果素子、磁気ヘッド及び磁気再生装置 |
US6683763B1 (en) | 2001-08-15 | 2004-01-27 | Western Digital (Fremont), Inc. | Method and system for providing a self-aligned electrical contact for a TMR element |
US6418048B1 (en) | 2001-08-15 | 2002-07-09 | Read-Rite Corporation | Spin-dependent tunneling sensor suitable for a magnetic memory |
US6512690B1 (en) | 2001-08-15 | 2003-01-28 | Read-Rite Corporation | High sensitivity common source amplifier MRAM cell, memory array and read/write scheme |
US6809899B1 (en) | 2001-08-20 | 2004-10-26 | Western Digital (Fremont), Inc. | Magnetic heads for perpendicular recording with trapezoidal pole tips |
US7027274B1 (en) | 2001-08-30 | 2006-04-11 | Western Digital (Fremont), Inc. | Spin-dependent tunneling read/write sensor for hard disk drives |
US6791793B1 (en) | 2001-09-14 | 2004-09-14 | Western Digital (Fremont), Inc. | Perpendicular recording write head having a recessed magnetic adjunct pole and method of making the same |
US6816345B1 (en) | 2001-09-24 | 2004-11-09 | Western Digital (Fremont), Inc. | Magnetoresistive sensors having submicron track widths and method of making |
US6754049B1 (en) | 2001-10-16 | 2004-06-22 | Western Digital (Fremont), Inc. | Transducers for perpendicular recording with inductive cancellation at MR sensor |
US6987643B1 (en) | 2001-10-23 | 2006-01-17 | Western Digital (Fremont), Inc. | Pole structure to relieve adjacent track writing |
US6721138B1 (en) | 2001-10-24 | 2004-04-13 | Western Digital (Fremont), Inc. | Inductive transducer with stitched pole tip and pedestal defining zero throat height |
US7054113B1 (en) | 2001-10-25 | 2006-05-30 | Western Digital (Fremont), Inc. | Reader/writer for magnetic memory |
US6583968B1 (en) | 2001-10-31 | 2003-06-24 | Western Digital Technologies, Inc. | Spindle motor hub having equivalent MR read element bias voltage to mitigate potential between disk and MR read element |
US6807030B1 (en) | 2001-12-18 | 2004-10-19 | Western Digital (Fremont), Inc. | Enclosed piezoelectric microactuators coupled between head and suspension |
US6961221B1 (en) | 2001-12-18 | 2005-11-01 | Western Digital (Fremont), Inc. | Piezoelectric microactuators with substantially fixed axis of rotation and magnified stroke |
US6751055B1 (en) | 2002-01-08 | 2004-06-15 | Western Digital (Fremont), Inc. | Inductive transducer with reduced pole tip protrusion |
US6737281B1 (en) | 2002-01-08 | 2004-05-18 | Western Digital (Fremont), Inc. | Method of making transducer with inorganic nonferromagnetic apex region |
US6747301B1 (en) | 2002-02-06 | 2004-06-08 | Western Digital (Fremont), Inc. | Spin dependent tunneling barriers formed with a magnetic alloy |
US6639291B1 (en) | 2002-02-06 | 2003-10-28 | Western Digital (Fremont), Inc. | Spin dependent tunneling barriers doped with magnetic particles |
US6724572B1 (en) | 2002-02-28 | 2004-04-20 | Western Digital, Inc. | Inductive transducer with recessed leading pole layer |
US7307814B1 (en) | 2002-03-01 | 2007-12-11 | Western Digital (Fremont), Llc | Pedestal defined zero throat writer having a recessed pedestal |
US6859343B1 (en) | 2002-03-19 | 2005-02-22 | Western Digital, Inc. | Hybrid diffuser for minimizing thermal pole tip protrusion and reader sensor temperature |
US6757140B1 (en) | 2002-03-19 | 2004-06-29 | Western Digital, Inc. | Electrostatic microelectromechanical (MEM) microactuator for precise read/write head positioning |
US7035046B1 (en) | 2002-03-19 | 2006-04-25 | Western Digital (Fremont), Inc. | System and method for minimizing thermal pole tip protrusion |
US6873494B2 (en) | 2002-04-29 | 2005-03-29 | Western Digital (Fremont), Inc. | Write head with high moment film layer having tapered portion extending beyond write gap layer |
US6760966B2 (en) | 2002-04-30 | 2004-07-13 | Headway Technologies, Inc. | Process of manufacturing a side reading reduced GMR for high track density |
US7522377B1 (en) | 2002-05-01 | 2009-04-21 | Western Digital (Fremont), Llc | Magnetic write head with high moment magnetic thin film formed over seed layer |
US6778358B1 (en) | 2002-05-01 | 2004-08-17 | Western Digital (Fremont), Inc. | Magnetically soft, high saturation magnetization laminates of iron-cobalt-nitrogen and iron-nickel |
US6744608B1 (en) | 2002-05-14 | 2004-06-01 | Western Digital (Fremont), Inc. | Method and system for making TMR junctions |
US6942824B1 (en) | 2002-05-22 | 2005-09-13 | Western Digital (Fremont), Inc. | UV curable and electrically conductive adhesive for bonding magnetic disk drive components |
US6909578B1 (en) | 2002-05-30 | 2005-06-21 | Western Digital (Fremont), Inc. | Method and system for reducing thermal pole tip protrusion |
US7133253B1 (en) | 2002-06-03 | 2006-11-07 | Western Digital (Fremont), Inc. | Pole tip with sides flared at media-facing surface |
US7130165B2 (en) | 2002-06-05 | 2006-10-31 | Seagate Technology Llc | Side shielded current in plane spin-valve |
US6806035B1 (en) | 2002-06-25 | 2004-10-19 | Western Digital (Fremont), Inc. | Wafer serialization manufacturing process for read/write heads using photolithography and selective reactive ion etching |
US6861937B1 (en) | 2002-06-25 | 2005-03-01 | Western Digital (Fremont), Inc. | Double winding twin coil for thin-film head writer |
US6713801B1 (en) | 2002-07-09 | 2004-03-30 | Western Digital (Fremont), Inc. | α-tantalum lead for use with magnetic tunneling junctions |
US6680863B1 (en) | 2002-07-09 | 2004-01-20 | Western Digital (Fremont), Inc. | MRAM memory array having merged word lines |
US6707083B1 (en) | 2002-07-09 | 2004-03-16 | Western Digital (Fremont), Inc. | Magnetic tunneling junction with improved power consumption |
US6912106B1 (en) | 2002-08-06 | 2005-06-28 | Western Digital (Fremont), Inc. | Writer with a hot seed zero throat and substantially flat top pole |
US6975486B2 (en) | 2002-08-06 | 2005-12-13 | Western Digital (Fremont), Inc. | Thin film write head having a laminated, flat top pole with bottom shaper and method of fabrication |
US6894871B2 (en) | 2002-08-07 | 2005-05-17 | Western Digital (Fremont), Inc. | Technique for reducing pole tip protrusion in a magnetic write head and GMR stripe temperature in an associated read head structure utilizing one or more internal diffuser regions |
US6879464B2 (en) | 2002-08-16 | 2005-04-12 | Western Digital (Fremont), Inc. | Air bearing having a cavity patch surface coplanar with a leading edge pad surface |
US7211339B1 (en) | 2002-08-22 | 2007-05-01 | Western Digital (Fremont), Inc. | Highly conductive lead adjoining MR stripe and extending beyond stripe height at junction |
JP4065787B2 (ja) | 2002-08-30 | 2008-03-26 | 株式会社日立グローバルストレージテクノロジーズ | 磁気ヘッドおよび磁気記録再生装置 |
US6934129B1 (en) | 2002-09-30 | 2005-08-23 | Western Digital (Fremont), Inc. | Magnetoresistive sensor with overlapping lead layers including alpha tantalum and conductive layers |
US6989972B1 (en) | 2002-09-30 | 2006-01-24 | Western Digital (Fremont), Inc. | Magnetoresistive sensor with overlapping leads having distributed current |
US7016166B1 (en) | 2002-10-10 | 2006-03-21 | Seagate Technology Llc | Mag-tab design for biasing magnetic sensors |
US6940688B2 (en) | 2002-10-21 | 2005-09-06 | Western Digital (Fremont), Inc. | Coil inductive writer having a low inductance and short yoke length |
US6950266B1 (en) | 2002-10-28 | 2005-09-27 | Western Digital (Fremont), Inc. | Active fly height control crown actuator |
US6891702B1 (en) | 2002-10-31 | 2005-05-10 | Western Digital Technologies, Inc. | Method and devices for providing magnetoresistive heads with protection from electrostatic discharge and electric overstress events |
US7113366B1 (en) | 2002-11-07 | 2006-09-26 | Western Digital (Fremont), Inc. | Double-nosed inductive transducer with reduced off-track writing |
US7116517B1 (en) | 2002-12-18 | 2006-10-03 | Western Digital (Fremont), Inc. | Stitched pole write element with a T-shaped pole tip portion |
US7057857B1 (en) | 2002-12-20 | 2006-06-06 | Western Digital (Fremont), Inc. | Dimple pivot post for a rotary co-located microactuator |
US7229706B2 (en) | 2003-01-15 | 2007-06-12 | Alps Electric Co., Ltd. | Magnetic detecting element having pinned magnetic layers disposed on both sides of free magnetic layer |
US6888704B1 (en) | 2003-01-22 | 2005-05-03 | Western Digital (Fremont), Inc. | Method and system for providing high sensitivity giant magnetoresistive sensors |
US6943993B2 (en) | 2003-02-11 | 2005-09-13 | Western Digital (Fremont), Inc. | Magnetic recording head with a side shield structure for controlling side reading of thin film read sensor |
JP2004259914A (ja) | 2003-02-26 | 2004-09-16 | Alps Electric Co Ltd | 磁気検出素子 |
US7006327B2 (en) | 2003-02-27 | 2006-02-28 | Western Digital (Fremont), Inc. | Thin film recording head with a buried coil providing a shortened yoke and improved dimension control |
US6944939B2 (en) | 2003-03-21 | 2005-09-20 | Headway Technologies, Inc. | Method for forming a GMR sensor having improved longitudinal biasing |
US7286329B1 (en) | 2003-04-02 | 2007-10-23 | Western Digital (Fremont), Llc | GMR sensor with shallow contiguous junction and bias layers aligned with free sensor layers |
US7155810B2 (en) | 2003-09-30 | 2007-01-02 | Hitachi Global Storage Technologies Netherlands, B.V. | Method for fabricating a magnetic head |
US7012832B1 (en) | 2003-10-31 | 2006-03-14 | Western Digital (Fremont), Inc. | Magnetic memory cell with plural read transistors |
US7134184B2 (en) | 2003-11-12 | 2006-11-14 | Headway Technologies, Inc. | Process of manufacturing a narrow track CCP head with bias cancellation |
US7126790B1 (en) | 2003-11-26 | 2006-10-24 | Western Digital (Fremont), Inc. | Magnetic head for perpendicular recording with magnetic loop providing non-perpendicular write field |
US7126788B1 (en) | 2003-11-26 | 2006-10-24 | Western Digital (Fremont), Inc. | Trailing edge recording magnetic head with reversed double bias coil and deflection pole for perpendicular recording with a non-perpendicular write field |
US7310204B1 (en) | 2003-12-19 | 2007-12-18 | Western Digital (Fremont), Llc | Inductive writer design for using a soft magnetic pedestal having a high magnetic saturation layer |
US8104166B1 (en) | 2003-12-19 | 2012-01-31 | Western Digital (Fremont), Llc | Self-aligned method for fabricating a high density GMR read element |
US7239478B1 (en) | 2004-01-31 | 2007-07-03 | Western Digital (Fremont), Inc. | Write element for perpendicular recording in a data storage system |
US7342752B1 (en) | 2004-01-31 | 2008-03-11 | Western Digital (Fremont), Llc | Magnetoresistive read head having a bias structure with at least one dusting layer |
US7199974B1 (en) | 2004-02-02 | 2007-04-03 | Western Digital (Fremont), Inc. | Read/write head with reduced pole tip protrusion |
US7248433B1 (en) | 2004-02-02 | 2007-07-24 | Western Digital (Fremont), Inc. | Magnetic head with stitched top pole layer and single layer coil or solenoidal coil |
US7639457B1 (en) | 2004-02-27 | 2009-12-29 | Western Digital (Fremont), Llc | Magnetic sensor with underlayers promoting high-coercivity, in-plane bias layers |
US7212384B1 (en) | 2004-02-27 | 2007-05-01 | Western Digital (Fremont), Inc. | Magnetic read head with recessed hard bias and current leads |
US7292409B1 (en) | 2004-02-27 | 2007-11-06 | Western Digital (Fremont), Llc | Magnetic head with thin trailing pedestal layer |
US7248449B1 (en) | 2004-03-31 | 2007-07-24 | Western Digital (Fremont), Inc. | Magnetoresistive read sensor with reduced effective shield-to-shield spacing |
US8670211B1 (en) | 2004-03-31 | 2014-03-11 | Western Digital (Fremont), Llc | Method and system for providing high magnetic flux saturation CoFe films |
US6934113B1 (en) | 2004-03-31 | 2005-08-23 | Western Digital (Fremont), Inc. | Method and system for providing dynamic actuation of a write head using a strain element |
US7110289B1 (en) | 2004-03-31 | 2006-09-19 | Western Digital (Fremont), Inc. | Method and system for controlling MRAM write current to reduce power consumption |
US7333295B1 (en) | 2004-03-31 | 2008-02-19 | Western Digital (Fremont), Llc | Magnetic recording head with high saturation magnetic flux density CoNiFe thin film composition |
US7280325B1 (en) | 2004-03-31 | 2007-10-09 | Western Digital (Fremont), Llc | Ferromagnetic structure including a first section separated from a ferromagnetic layer by an electrically conductive nonmagnetic spacer and a second section elongated relative to the first section in at least one dimension |
US7193815B1 (en) | 2004-04-06 | 2007-03-20 | Western Digital (Fremont), Inc. | Shielded pole magnetic head for perpendicular recording |
US7672086B1 (en) | 2004-04-28 | 2010-03-02 | Western Digital (Fremont), Llc | Method and system for providing a magnetic element having a current confined layer |
US7660080B1 (en) | 2004-04-30 | 2010-02-09 | Western Digital (Fremont), Llc | Read/write head with dynamic flying height control by magnetostriction |
US7307818B1 (en) | 2004-04-30 | 2007-12-11 | Western Digital (Fremont), Llc | Method and system for providing a stable spin filter |
US7248431B1 (en) | 2004-04-30 | 2007-07-24 | Yinshi Liu | Method of fabricating a perpendicular recording write head having a gap with two portions |
US7199975B1 (en) | 2004-05-15 | 2007-04-03 | Western Digital (Fremont), Inc. | Magnetic head for perpendicular recording with hard bias structure for write pole tip |
US7092195B1 (en) | 2004-05-28 | 2006-08-15 | Western Digital (Fremont), Inc. | Method of using a magnetic write head having an internal heater |
US7268985B2 (en) | 2004-05-28 | 2007-09-11 | Hitachi Global Storage Technologies Netherlands, B.V. | Magnetic head having a layered hard bias layer exhibiting reduced noise |
US7688555B2 (en) | 2004-06-15 | 2010-03-30 | Headway Technologies, Inc. | Hard bias design for extra high density recording |
US7379269B1 (en) | 2004-07-30 | 2008-05-27 | Western Digital (Fremont), Llc | Write element with reduced yoke length for ultra-high density writing |
US7238292B1 (en) | 2004-07-30 | 2007-07-03 | Western Digital (Fremont), Inc. | Method of fabricating a write element with a reduced yoke length |
US7522379B1 (en) | 2004-07-30 | 2009-04-21 | Western Digital (Fremont), Llc | Write element with recessed pole and heat sink layer for ultra-high density writing |
US7318947B1 (en) | 2004-08-31 | 2008-01-15 | Western Digital (Fremont), Llc | Method and apparatus for controlling magnetostriction in a spin valve sensor |
US7170725B1 (en) | 2004-09-01 | 2007-01-30 | Western Digital (Fremont), Inc. | Magnetic sensor having an aluminum-nitride seed layer for an anti-ferromagnetic layer |
US7595967B1 (en) | 2004-09-07 | 2009-09-29 | Western Digital (Fremont), Llp | Method for fabricating a spacer layer for a magnetoresistive element |
US7296339B1 (en) | 2004-09-08 | 2007-11-20 | Western Digital (Fremont), Llc | Method for manufacturing a perpendicular magnetic recording head |
US7124654B1 (en) | 2004-09-30 | 2006-10-24 | Western Digital (Fremont), Inc. | Method for determining a microactuator range of movement |
US7131346B1 (en) | 2004-10-15 | 2006-11-07 | Western Digital (Fremont), Inc. | Spin stand testing system with fine positioner for head stack assembly |
US7041985B1 (en) | 2004-11-12 | 2006-05-09 | Western Digital (Fremont), Inc. | Manipulator for microscopy sample preparation and methods for making and use thereof |
US7284316B1 (en) | 2004-11-17 | 2007-10-23 | Western Digital (Fremont), Llc | Method for forming a hard bias structure in a magnetoresistive sensor |
US7446987B2 (en) | 2004-12-17 | 2008-11-04 | Headway Technologies, Inc. | Composite hard bias design with a soft magnetic underlayer for sensor applications |
US7515388B2 (en) | 2004-12-17 | 2009-04-07 | Headway Technologies, Inc. | Composite hard bias design with a soft magnetic underlayer for sensor applications |
JP2006179145A (ja) | 2004-12-24 | 2006-07-06 | Hitachi Global Storage Technologies Netherlands Bv | 磁気抵抗効果ヘッド及びその製造方法、記録再生分離型磁気ヘッド |
US7428124B1 (en) | 2005-01-18 | 2008-09-23 | Western Digital (Fremont), Llc | Magnetic recording head with resistive heating element and thermal barrier layer |
US7372665B1 (en) | 2005-01-18 | 2008-05-13 | Western Digital (Fremont), Llc | Magnetic recording head with resistive heating element located near the write coil |
US7430098B1 (en) | 2005-01-18 | 2008-09-30 | Western Digital (Fremont), Llc | Perpendicular magnetic recording head with dynamic flying height heating element |
US7444740B1 (en) | 2005-01-31 | 2008-11-04 | Western Digital (Fremont), Llc | Damascene process for fabricating poles in recording heads |
US7819979B1 (en) | 2005-01-31 | 2010-10-26 | Western Digital (Fremont), Llc | Method and system for cleaning magnetic artifacts using a carbonyl reactive ion etch |
US7363697B1 (en) | 2005-02-18 | 2008-04-29 | Western Digital (Fremont), Llc | Method for manufacturing a group of head gimbal assemblies |
US7275304B2 (en) | 2005-03-04 | 2007-10-02 | Headway Technologies, Inc. | Method of forming a hard bias structure in a magnetic head |
US6969989B1 (en) | 2005-03-11 | 2005-11-29 | Western Digital (Fremont), Inc. | Method for characterizing a perpendicular recording head writing pole |
US7417832B1 (en) | 2005-04-26 | 2008-08-26 | Western Digital (Fremont), Llc | Magnetoresistive structure having a novel specular and filter layer combination |
US7869160B1 (en) | 2005-04-27 | 2011-01-11 | Western Digital (Fremont), Llc | Perpendicular recording head with shaped pole surfaces for higher linear data densities |
US7602591B2 (en) | 2005-06-22 | 2009-10-13 | Tdk Corporation | Exchange-coupled free layer with out-of-plane magnetization |
US7551406B1 (en) | 2005-07-01 | 2009-06-23 | Western Digital (Fremont), Llc | Dual electrical lapping guides with common bonding pad |
US7552523B1 (en) | 2005-07-01 | 2009-06-30 | Western Digital (Fremont), Llc | Method for manufacturing a perpendicular magnetic recording transducer |
US7554767B1 (en) | 2005-07-01 | 2009-06-30 | Western Digital (Fremont), Llc | Electrical lapping guide disposed laterally relative to a shield pedestal |
US8333008B1 (en) | 2005-07-29 | 2012-12-18 | Western Digital (Fremont), Llc | Method for manufacturing a perpendicular magnetic recording transducer |
US8424192B1 (en) | 2005-08-08 | 2013-04-23 | Western Digital (Fremont), Llc | Method for manufacturing a pole for a magnetic recording head |
US7522382B1 (en) | 2005-08-22 | 2009-04-21 | Western Digital (Fremont), Llc | Head stack assembly with interleaved flexure tail bond pad rows |
US7684160B1 (en) | 2006-02-06 | 2010-03-23 | Western Digital (Fremont), Llc | Magnetoresistive structure having a novel specular and barrier layer combination |
US7419891B1 (en) | 2006-02-13 | 2008-09-02 | Western Digital (Fremont), Llc | Method and system for providing a smaller critical dimension magnetic element utilizing a single layer mask |
US7493688B1 (en) | 2006-02-13 | 2009-02-24 | Western Digital (Fremont), Llc | Method of manufacturing a magnetic recording transducer |
US7508627B1 (en) | 2006-03-03 | 2009-03-24 | Western Digital (Fremont), Llc | Method and system for providing perpendicular magnetic recording transducers |
JP2007266498A (ja) | 2006-03-29 | 2007-10-11 | Toshiba Corp | 磁気記録素子及び磁気メモリ |
US7542246B1 (en) | 2006-04-18 | 2009-06-02 | Western Digital (Fremont), Llc | Transducer with pole tip protrusion compensation layer |
US7349170B1 (en) | 2006-04-28 | 2008-03-25 | Western Digital (Fremont), Llc | Method of monitoring operation of a disk drive by analyzing the envelope of a read-back signal in the frequency domain |
US8141235B1 (en) | 2006-06-09 | 2012-03-27 | Western Digital (Fremont), Llc | Method for manufacturing a perpendicular magnetic recording transducers |
US7746602B2 (en) * | 2006-06-21 | 2010-06-29 | Hitachi Global Storage Technologies Netherlands B.V. | Magnetic read head with reduced shunting |
JP2008041827A (ja) | 2006-08-03 | 2008-02-21 | Alps Electric Co Ltd | トンネル型磁気検出素子及びその製造方法 |
US7672080B1 (en) | 2006-09-15 | 2010-03-02 | Western Digital (Fremont), Llc | Laminated perpendicular writer head including amorphous metal |
US7580230B2 (en) | 2006-10-24 | 2009-08-25 | Hitachi Global Storage Technologies Netherlands B.V. | Magnetoresistive sensor having shape enhanced pinning, a flux guide structure and damage free virtual edges |
US7719795B2 (en) | 2006-11-15 | 2010-05-18 | Western Digital (Fremont), Llc | Head having a transducer heater and an air bearing surface with a flow-diversion dam and pressure-relief trough disposed upstream of the transducer |
US7804668B2 (en) | 2006-11-16 | 2010-09-28 | Headway Technologies, Inc. | Enhanced hard bias in thin film magnetoresistive sensors with perpendicular easy axis growth of hard bias and strong shield-hard bias coupling |
US8689430B1 (en) | 2006-11-29 | 2014-04-08 | Western Digital (Fremont), Llc | Method for providing a perpendicular magnetic recording (PMR)head |
US7688546B1 (en) | 2006-12-21 | 2010-03-30 | Western Digital (Fremont), Llc | Perpendicular magnetic recording head having nonmagnetic insertion layers |
US8308921B1 (en) | 2006-12-21 | 2012-11-13 | Western Digital (Fremont), Llc | Mask for increased uniformity in ion beam deposition |
US7695761B1 (en) | 2006-12-21 | 2010-04-13 | Western Digital (Fremont), Llc | Method and system for providing a spin tunneling magnetic element having a crystalline barrier layer |
US7371152B1 (en) | 2006-12-22 | 2008-05-13 | Western Digital (Fremont), Llc | Non-uniform subaperture polishing |
US7848065B2 (en) | 2006-12-22 | 2010-12-07 | Hitachi Global Storage Technologies Netherlands B.V. | Magnetoresistive sensor having an anisotropic hard bias with high coercivity |
US7911735B1 (en) | 2007-03-09 | 2011-03-22 | Western Digital (Fremont), Llc | Perpendicular magnetic recording head utilizing a nonmagnetic underlayer layer |
US7911737B1 (en) | 2007-03-23 | 2011-03-22 | Western Digital (Fremont), Llc | Method and system for providing a PMR head having an antiferromagnetically coupled pole |
US7872833B2 (en) | 2007-04-17 | 2011-01-18 | Western Digital (Fremont) , LLC | Head with a transducer overcoat having a trailing air flow dam that is shallowly recessed from an air bearing surface |
US7855854B2 (en) | 2007-04-17 | 2010-12-21 | Western Digital (Fremont), Llc | Head with an air bearing surface having a shallow recessed trailing air flow dam |
US8373945B1 (en) | 2007-04-23 | 2013-02-12 | Western Digital (Fremont), Llc | Magnetic writer having a split yoke |
US8559141B1 (en) | 2007-05-07 | 2013-10-15 | Western Digital (Fremont), Llc | Spin tunneling magnetic element promoting free layer crystal growth from a barrier layer interface |
US7736823B1 (en) | 2007-05-11 | 2010-06-15 | Western Digital (Fremont), Llc | Method and system for providing optical proximity correction for structures such as a PMR nose |
US8072705B1 (en) | 2007-05-11 | 2011-12-06 | Western Digital (Fremont), Llc | Method and system for providing a magnetic writer using a BARC |
US7436620B1 (en) | 2007-05-29 | 2008-10-14 | Western Digital (Fremont), Llc | Method for selecting an electrical power to be applied to a head-based flying height actuator |
US7440220B1 (en) | 2007-05-29 | 2008-10-21 | Western Digital (Fremont), Llc | Method for defining a touch-down power for head having a flying height actuator |
US7872824B1 (en) | 2007-06-11 | 2011-01-18 | Western Digital (Fremont), Llc | Setting an operating bias current for a magnetoresistive head by computing a target operating voltage |
US7389577B1 (en) | 2007-06-26 | 2008-06-24 | Western Digital (Fremont), Llc | Method to fabricate an ESD resistant tunneling magnetoresistive read transducer |
US8357244B1 (en) | 2007-06-28 | 2013-01-22 | Western Digital (Fremont), Llc | Method for lifting off photoresist beneath an overlayer |
US7829264B1 (en) | 2007-08-09 | 2010-11-09 | Western Digital (Fremont), Llc | Method and system for providing a microelectronic device using a plurality of focus distances |
US7894166B2 (en) | 2007-10-25 | 2011-02-22 | Tdk Corporation | CPP GMR device with ferromagnetic layer split in depth direction |
US7846643B1 (en) | 2007-11-02 | 2010-12-07 | Western Digital (Fremont), Llc | Method and system for providing a structure in a microelectronic device using a chromeless alternating phase shift mask |
US8537494B1 (en) | 2007-11-06 | 2013-09-17 | Western Digital (Fremont), Llc | PMR head with an angled stitch layer |
US8015692B1 (en) | 2007-11-07 | 2011-09-13 | Western Digital (Fremont), Llc | Method for providing a perpendicular magnetic recording (PMR) head |
US7583466B2 (en) | 2007-11-15 | 2009-09-01 | Western Digital (Fremont), Llc | Disk drive determining operating fly height by detecting head disk contact from disk rotation time |
US8077434B1 (en) | 2007-11-19 | 2011-12-13 | Western Digital (Fremont), Llc | Perpendicular magnetic recording head having a recessed magnetic base layer |
US7916426B2 (en) | 2007-11-30 | 2011-03-29 | Western Digital (Fremont), Llc | Head with an air bearing surface having left and right leading pressurizing steps, each with short and long regions |
US7785666B1 (en) | 2007-12-12 | 2010-08-31 | Western Digital (Fremont), Llc | Methods for fabricating a magnetic recording device |
US8079135B1 (en) | 2007-12-13 | 2011-12-20 | Western Digital (Fremont), Llc | Method for providing a perpendicular magnetic recording (PMR) transducer |
US8015694B2 (en) | 2007-12-18 | 2011-09-13 | Hitachi Global Storage Technologies Netherlands B.V. | Method for making a scissoring-type current-perpendicular-to-the-plane (CPP) magnetoresistive sensor |
US8793866B1 (en) | 2007-12-19 | 2014-08-05 | Western Digital (Fremont), Llc | Method for providing a perpendicular magnetic recording head |
US7929258B2 (en) | 2008-01-22 | 2011-04-19 | Seagate Technology Llc | Magnetic sensor including a free layer having perpendicular to the plane anisotropy |
US8545999B1 (en) | 2008-02-21 | 2013-10-01 | Western Digital (Fremont), Llc | Method and system for providing a magnetoresistive structure |
US8179636B1 (en) | 2008-03-05 | 2012-05-15 | Western Digital (Fremont), Llc | Method and system for providing a perpendicular magnetic recording writer |
US8091210B1 (en) | 2008-03-05 | 2012-01-10 | Western Digital (Fremont), Llc | Method for providing a structure in magnetic recording transducer |
US8169473B1 (en) | 2008-03-27 | 2012-05-01 | Western Digital (Fremont), Llc | Method and system for exposing a photoresist in a magnetic device |
US8151441B1 (en) | 2008-03-27 | 2012-04-10 | Western Digital (Fremont), Llc | Method for providing and utilizing an electronic lapping guide in a magnetic recording transducer |
US8146236B1 (en) | 2008-03-28 | 2012-04-03 | Western Digital (Fremont), Llc | Method for providing a perpendicular magnetic recording (PMR) transducer |
US8166632B1 (en) | 2008-03-28 | 2012-05-01 | Western Digital (Fremont), Llc | Method for providing a perpendicular magnetic recording (PMR) transducer |
US8163185B1 (en) | 2008-03-31 | 2012-04-24 | Western Digital (Fremont), Llc | Method and apparatus for lifting off photoresist beneath an overlayer |
US8316527B2 (en) | 2008-04-01 | 2012-11-27 | Western Digital (Fremont), Llc | Method for providing at least one magnetoresistive device |
US8107202B2 (en) | 2008-04-11 | 2012-01-31 | Hitachi Global Storage Technologies Netherlands B.V. | Magnetoresistive sensor with novel pinned layer structure |
US8233247B2 (en) | 2008-04-11 | 2012-07-31 | Hitachi Global Storage Technologies Netherlands B.V. | Scissoring-type current-perpendicular-to-the-plane giant magnetoresistance (CPP-GMR) sensors with damped free layer structures |
US8136224B1 (en) | 2008-05-15 | 2012-03-20 | Western Digital (Fremont), Llc | Method and system for providing a perpendicular magnetic recording head utilizing a mask having an undercut line |
US8136225B1 (en) | 2008-05-15 | 2012-03-20 | Western Digital (Fremont), Llc | Method and system for providing a perpendicular magnetic recording head |
US8259410B1 (en) | 2008-05-23 | 2012-09-04 | Western Digital (Fremont), Llc | Method and system for providing a magnetic head using a composite magnetic material in the recording transducer |
US8270126B1 (en) | 2008-06-16 | 2012-09-18 | Western Digital (Fremont), Llc | Method and system for providing an improved hard bias structure |
US8320076B1 (en) | 2008-06-26 | 2012-11-27 | Western Digital (Fremont), Llc | Method and system for providing a magnetic recording transducer including an assist pole having surfaces angled with respect to the ABS |
US8416540B1 (en) | 2008-06-26 | 2013-04-09 | Western Digital (Fremont), Llc | Method for defining a magnetoresistive junction using multiple mills at a plurality of angles |
US8349195B1 (en) | 2008-06-27 | 2013-01-08 | Western Digital (Fremont), Llc | Method and system for providing a magnetoresistive structure using undercut free mask |
US8011084B2 (en) | 2008-07-31 | 2011-09-06 | Hitachi Global Storage Technologies Netherlands B.V. | Method for fabricating narrow magnetic read width TMR/CPP sensors |
US8228633B1 (en) | 2008-08-21 | 2012-07-24 | Western Digital (Fremont), Llc | Method and system for providing a magnetic recording transducer having a hybrid moment pole |
US8276258B1 (en) | 2008-08-26 | 2012-10-02 | Western Digital (Fremont), Llc | Method for fabricating a magnetic recording transducer |
US8166631B1 (en) | 2008-08-27 | 2012-05-01 | Western Digital (Fremont), Llc | Method for fabricating a magnetic recording transducer having side shields |
US8343319B1 (en) | 2008-09-25 | 2013-01-01 | Western Digital (Fremont), Llc | Method and system for providing an improved hard bias structure |
US8720044B1 (en) | 2008-09-26 | 2014-05-13 | Western Digital (Fremont), Llc | Method for manufacturing a magnetic recording transducer having side shields |
US8018691B2 (en) | 2008-10-20 | 2011-09-13 | Hitachi Global Storage Technologies Netherlands B.V. | CPP dual free layer magnetoresistive head for magnetic data storage |
US8334093B2 (en) | 2008-10-31 | 2012-12-18 | Western Digital (Fremont), Llc | Method and system for providing a perpendicular magnetic recording head |
US8136805B1 (en) | 2008-11-19 | 2012-03-20 | Western Digital (Fremont), Llc | Row bar holder |
US8077435B1 (en) | 2008-11-20 | 2011-12-13 | Western Digital (Fremont), Llc | Current perpendicular-to-plane read sensor with back shield |
US8649123B1 (en) | 2008-11-26 | 2014-02-11 | Western Digital (Fremont), Llc | Method to eliminate reactive ion etching (RIE) loading effects for damascene perpendicular magnetic recording (PMR) fabrication |
US8018678B1 (en) | 2008-11-26 | 2011-09-13 | Western Digital (Fremont), Llc | Method for simultaneous electronic lapping guide (ELG) and perpendicular magnetic recording (PMR) pole formation |
US8547667B1 (en) | 2008-11-26 | 2013-10-01 | Western Digital (Fremont), Llc | Method and system for providing a hard bias structure in a magnetic recording transducer |
US8231796B1 (en) | 2008-12-09 | 2012-07-31 | Western Digital (Fremont), Llc | Method and system for providing a magnetic recording transducer having side shields |
US7910267B1 (en) | 2008-12-12 | 2011-03-22 | Western Digital (Fremont), Llc | Method and system for providing optical proximity correction for structures such as a PMR nose |
US8643980B1 (en) | 2008-12-15 | 2014-02-04 | Western Digital (Fremont), Llc | Micro-actuator enabling single direction motion of a magnetic disk drive head |
US8320077B1 (en) | 2008-12-15 | 2012-11-27 | Western Digital (Fremont), Llc | Method and system for providing a high moment film |
US8008912B1 (en) | 2008-12-16 | 2011-08-30 | Western Digital (Fremont), Llc | Method and system for testing P2 stiffness of a magnetoresistance transducer at the wafer level |
US8196285B1 (en) | 2008-12-17 | 2012-06-12 | Western Digital (Fremont), Llc | Method and system for providing a pole for a perpendicular magnetic recording head using a multi-layer hard mask |
US8259539B1 (en) | 2008-12-17 | 2012-09-04 | Western Digital (Fremont), Llc | Integration of a vertical cavity surface emitting laser (VCSEL) on an energy-assisted magnetic recording (EAMR) head |
US8537502B1 (en) | 2009-01-30 | 2013-09-17 | Western Digital (Fremont), Llc | Method and system for providing a magnetic transducer having improved shield-to-shield spacing |
US8404128B1 (en) | 2009-02-23 | 2013-03-26 | Western Digital (Fremont), Llc | Method and system for providing a perpendicular magnetic recording head |
US8097846B1 (en) | 2009-02-25 | 2012-01-17 | Western Digital (Fremont), Llc | Metrology and 3D reconstruction of devices in a wafer |
US8165709B1 (en) | 2009-02-26 | 2012-04-24 | Western Digital (Fremont), Llc | Four pad self-calibrating electronic lapping guide |
US8203800B2 (en) | 2009-03-05 | 2012-06-19 | Western Digital (Fremont), Llc | Servo design in data storage media |
US8262918B1 (en) | 2009-03-25 | 2012-09-11 | Western Digital (Fremont), Llc | Methods of producing damascene main pole for perpendicular magnetic recording head |
US8315019B1 (en) | 2009-03-31 | 2012-11-20 | Western Digital (Fremont), Llc | Method and system for providing an improved magnetoresistive structure utilizing an oxidation buffer layer |
US8077418B1 (en) | 2009-03-31 | 2011-12-13 | Western Digital (Fremont), Llc | Reducing thermal protrusion of a near field transducer in an energy assisted magnetic recording head |
US8222599B1 (en) | 2009-04-15 | 2012-07-17 | Western Digital (Fremont), Llc | Precise metrology with adaptive milling |
US8254060B1 (en) | 2009-04-17 | 2012-08-28 | Western Digital (Fremont), Llc | Straight top main pole for PMR bevel writer |
US8400731B1 (en) | 2009-04-19 | 2013-03-19 | Western Digital (Fremont), Llc | Write head with variable side shield gaps |
US8200054B1 (en) | 2009-04-19 | 2012-06-12 | Western Digital (Fremont), Llc | High efficiency grating coupling for light delivery in EAMR |
US7796356B1 (en) | 2009-05-04 | 2010-09-14 | Western Digital (Fremont), Llc | Head integrated touchdown sensor for hard disk drives |
US7800858B1 (en) | 2009-05-04 | 2010-09-21 | Western Digital (Fremont), Llc | Differential head integrated touchdown sensors for hard disk drives |
US20100290157A1 (en) | 2009-05-14 | 2010-11-18 | Western Digital (Fremont), Llc | Damascene coil processes and structures |
US8074345B1 (en) | 2009-05-18 | 2011-12-13 | Western Digital (Fremont), Llc | Method of measuring a bevel angle in a write head |
US8077557B1 (en) | 2009-05-19 | 2011-12-13 | Western Digital (Fremont), Llc | Multiple aperture VCSEL EAMR heads |
US8191237B1 (en) | 2009-05-21 | 2012-06-05 | Western Digital (Fremont), Llc | Method for providing a structure in a magnetic transducer |
US8225488B1 (en) | 2009-05-22 | 2012-07-24 | Western Digital (Fremont), Llc | Method for providing a perpendicular magnetic recording (PMR) pole |
US8227023B1 (en) | 2009-05-27 | 2012-07-24 | Western Digital (Fremont), Llc | Method and system for fabricating magnetic transducers with improved pinning |
US8291743B1 (en) | 2009-05-27 | 2012-10-23 | Western Digital (Fremont), Llc | Method and system for calibrating an electronic lapping guide for a beveled pole in a magnetic recording transducer |
US8443510B1 (en) | 2009-05-28 | 2013-05-21 | Western Digital (Fremont), Llc | Method for utilizing an electronic lapping guide for a beveled pole in a magnetic recording transducer |
US8171618B1 (en) | 2009-06-17 | 2012-05-08 | Western Digital (Fremont), Llc | Tunable pole trim processes for fabricating trapezoidal perpendicular magnetic recording (PMR) write poles |
US8381391B2 (en) | 2009-06-26 | 2013-02-26 | Western Digital (Fremont), Llc | Method for providing a magnetic recording transducer |
US8164864B2 (en) | 2009-07-16 | 2012-04-24 | Western Digital (Fremont), Llc | Method and system for fabricating magnetic transducers with improved pinning |
US8609262B2 (en) | 2009-07-17 | 2013-12-17 | Magic Technologies, Inc. | Structure and method to fabricate high performance MTJ devices for spin-transfer torque (STT)-RAM application |
US8498084B1 (en) | 2009-07-21 | 2013-07-30 | Western Digital (Fremont), Llc | Magnetoresistive sensors having an improved free layer |
US20110026169A1 (en) | 2009-07-28 | 2011-02-03 | Hardayal Singh Gill | Dual cpp gmr head using a scissor sensor |
US8611055B1 (en) | 2009-07-31 | 2013-12-17 | Western Digital (Fremont), Llc | Magnetic etch-stop layer for magnetoresistive read heads |
US8486285B2 (en) | 2009-08-20 | 2013-07-16 | Western Digital (Fremont), Llc | Damascene write poles produced via full film plating |
US8194365B1 (en) | 2009-09-03 | 2012-06-05 | Western Digital (Fremont), Llc | Method and system for providing a read sensor having a low magnetostriction free layer |
US8024748B1 (en) | 2009-09-09 | 2011-09-20 | Western Digital Technologies, Inc. | Method and system for coupling a laser with a slider in an energy assisted magnetic recording disk drive |
US8449948B2 (en) | 2009-09-10 | 2013-05-28 | Western Digital (Fremont), Llc | Method and system for corrosion protection of layers in a structure of a magnetic recording transducer |
US8233248B1 (en) | 2009-09-16 | 2012-07-31 | Western Digital (Fremont), Llc | Method and system for providing a magnetic recording transducer using a line hard mask |
US8385157B1 (en) | 2009-09-30 | 2013-02-26 | Western Digital Technologies, Inc. | Method and system for performing EAMR recording at high density using a large thermal spot size |
US8307539B1 (en) | 2009-09-30 | 2012-11-13 | Western Digital (Fremont), Llc | Method for modeling devices in a wafer |
US8279719B1 (en) | 2009-10-01 | 2012-10-02 | Western Digital (Fremont), Llc | Method and system for coupling a laser with a slider in an energy assisted magnetic recording disk drive |
US8385158B1 (en) | 2009-10-06 | 2013-02-26 | Western Digital (Fremont), Llc | Method and system for providing a magnetic recording transducer having a planarized near-field transducer and a sloped pole |
US8194366B1 (en) | 2009-10-14 | 2012-06-05 | Western Digital (Fremont), Llc | TMR read head structures with differential stripe heights |
US9202480B2 (en) | 2009-10-14 | 2015-12-01 | Western Digital (Fremont), LLC. | Double patterning hard mask for damascene perpendicular magnetic recording (PMR) writer |
US8336194B2 (en) | 2009-11-03 | 2012-12-25 | Western Digital (Fremont), Llc | Method of fabricating a tunneling magnetoresistive (TMR) reader |
US8125856B1 (en) | 2009-11-05 | 2012-02-28 | Western Digital (Fremont), Llc | Method and system for optically coupling a laser with a transducer in an energy assisted magnetic recording disk drive |
US8394280B1 (en) | 2009-11-06 | 2013-03-12 | Western Digital (Fremont), Llc | Resist pattern protection technique for double patterning application |
US8164855B1 (en) | 2009-11-06 | 2012-04-24 | Western Digital (Fremont), Llc | Method and system for providing a write pole in an energy assisted magnetic recording disk drive |
US8322023B1 (en) | 2009-11-10 | 2012-12-04 | Western Digital (Fremont), Llc | Method for providing a wrap-around shield for a magnetic recording transducer |
US8116171B1 (en) | 2009-11-11 | 2012-02-14 | Western Digital (Fremont), Llc | Method and system for providing energy assisted magnetic recording disk drive using a vertical surface emitting laser |
US8375564B1 (en) | 2009-12-08 | 2013-02-19 | Western Digital (Fremont), Llc | Method for fabricating a pole of a magnetic transducer |
US8116043B2 (en) | 2009-12-09 | 2012-02-14 | Western Digital (Fremont), Llc | Method and system for providing a magnetic transducer having an improved read sensor synthetic antiferromagnet |
US8264797B2 (en) | 2009-12-21 | 2012-09-11 | Western Digital (Fremont), Llc | Head gimbal assembly having a radial rotary piezoelectric microactuator between a read head and a flexure tongue |
US8277669B1 (en) | 2009-12-21 | 2012-10-02 | Western Digital (Fremont), Llc | Method and system for providing a perpendicular magnetic recording pole having a leading edge bevel |
US7982989B1 (en) | 2009-12-23 | 2011-07-19 | Western Digital (Fremont), Llc | Method and system for measuring magnetic interference width |
US8012804B1 (en) | 2009-12-23 | 2011-09-06 | Western Digital (Fremont), Llc | Method and system for mounting lasers on energy assisted magnetic recording heads |
US8532450B1 (en) | 2009-12-23 | 2013-09-10 | Western Digital (Fremont), Llc | Optical grating and method of manufacture |
US8451556B1 (en) | 2009-12-23 | 2013-05-28 | Western Digital (Fremont), Llc | Method and system for providing a molded capping layer for an energy assisted magnetic recording head |
US8134794B1 (en) | 2009-12-23 | 2012-03-13 | Western Digital (Fremont), Llc | Method and system for providing an energy assisted magnetic recording head in a wafer packaging configuration |
JP4903277B2 (ja) | 2010-01-26 | 2012-03-28 | 株式会社日立製作所 | 磁気抵抗効果素子、それを用いた磁気メモリセル及びランダムアクセスメモリ |
US8257597B1 (en) | 2010-03-03 | 2012-09-04 | Western Digital (Fremont), Llc | Double rie damascene process for nose length control |
US8164760B2 (en) | 2010-03-11 | 2012-04-24 | Western Digital (Fremont), Llc | Method and system for interrogating the thickness of a carbon layer |
US8813324B2 (en) | 2010-03-24 | 2014-08-26 | Western Digital (Fremont), Llc | Method for providing a piezoelectric multilayer |
US8404129B1 (en) | 2010-03-31 | 2013-03-26 | Western Digital (Fremont), Llc | Method and system for providing a curved surface in a magnetic recording head |
US8607439B1 (en) | 2010-03-31 | 2013-12-17 | Western Digital (Fremont), Llc | Method for providing an energy assisted magnetic recording (EAMR) head |
US8456963B1 (en) | 2010-04-12 | 2013-06-04 | Western Digital (Fremont), Llc | Method and system for an energy assisted magnetic recording head having a suspension-mounted laser |
US8341826B1 (en) | 2010-04-12 | 2013-01-01 | Western Digital (Fremont), Llc | Method for fabricating a magnetic recording transducer using a split seed layer |
US8320722B1 (en) | 2010-04-13 | 2012-11-27 | Western Digital (Fremont), Llc | Non-linear optical grating |
US8953285B2 (en) | 2010-05-05 | 2015-02-10 | Headway Technologies, Inc. | Side shielded magnetoresistive (MR) read head with perpendicular magnetic free layer |
US8458892B2 (en) | 2010-05-11 | 2013-06-11 | Western Digital (Fremont), Llc | Method for providing a perpendicular magnetic recording transducer using a low energy mill |
US8409453B1 (en) | 2010-05-12 | 2013-04-02 | Western Digital (Fremont), Llc | Method and system for providing a wrap-around shield using a patterned seed layer |
US8422841B1 (en) | 2010-05-13 | 2013-04-16 | Western Digital (Fremont), Llc | Double optical grating |
US8625941B1 (en) | 2010-05-20 | 2014-01-07 | Western Digital (Fremont), Llc | Broadband reflective waveguide metal gratings and their formation |
US8375565B2 (en) | 2010-05-28 | 2013-02-19 | Western Digital (Fremont), Llc | Method for providing an electronic lapping guide corresponding to a near-field transducer of an energy assisted magnetic recording transducer |
US8351307B1 (en) | 2010-06-04 | 2013-01-08 | Western Digital (Fremont), Llc | Trailing edge optimized near field transducer having non-rectangular pin cross section |
US8343364B1 (en) | 2010-06-08 | 2013-01-01 | Western Digital (Fremont), Llc | Double hard-mask mill back method of fabricating a near field transducer for energy assisted magnetic recording |
US8310901B1 (en) | 2010-06-09 | 2012-11-13 | Western Digital (Fremont), Llc | Method and system for providing separate write and optical modules in an energy assisted magnetic recording disk drive |
US8320219B1 (en) | 2010-06-15 | 2012-11-27 | Western Digital (Fremont), Llc | Trailing edge optimized near field transducer |
US8454846B1 (en) | 2010-06-17 | 2013-06-04 | Western Digital (Fremont), Llc | Method and system for providing a full wrap-around shield using a frame configured wet etch in a damascene process |
US8264798B1 (en) | 2010-06-23 | 2012-09-11 | Western Digital (Fremont), Llc | Systems and methods for providing magnetic recording heads adapted for writing shingled tracks |
US8248896B1 (en) | 2010-06-24 | 2012-08-21 | Western Digital (Fremont), Llc | Method and system for providing an energy assisted magnetic recording disk drive having improved heat dissipation |
US8422342B1 (en) | 2010-06-25 | 2013-04-16 | Western Digital (Fremont), Llc | Energy assisted magnetic recording disk drive using a distributed feedback laser |
US8262919B1 (en) | 2010-06-25 | 2012-09-11 | Western Digital (Fremont), Llc | Method and system for providing a perpendicular magnetic recording pole using multiple chemical mechanical planarizations |
US8144437B2 (en) | 2010-06-28 | 2012-03-27 | Tdk Corporation | Magnetoresistive element and thin film magnetic head |
US8322022B1 (en) | 2010-06-28 | 2012-12-04 | Western Digital (Fremont), Llc | Method for providing an energy assisted magnetic recording head in a wafer packaging configuration |
US8220140B1 (en) | 2010-09-13 | 2012-07-17 | Western Digital (Fremont), Llc | System for performing bonding a first substrate to a second substrate |
US8790524B1 (en) | 2010-09-13 | 2014-07-29 | Western Digital (Fremont), Llc | Method and system for providing a magnetic recording transducer using a line hard mask and a wet-etchable mask |
US8444866B1 (en) | 2010-09-21 | 2013-05-21 | Westen Digital (Fremont), LLC | Method and system for providing a perpendicular magnetic recording pole with a multi-layer side gap |
US20120104522A1 (en) | 2010-11-01 | 2012-05-03 | Seagate Technology Llc | Magnetic tunnel junction cells having perpendicular anisotropy and enhancement layer |
US9018100B2 (en) | 2010-11-10 | 2015-04-28 | Western Digital (Fremont), Llc | Damascene process using PVD sputter carbon film as CMP stop layer for forming a magnetic recording head |
US8413317B1 (en) | 2010-11-12 | 2013-04-09 | Western Digital (Fremont), Llc | Method for fabricating a structure for a microelectric device |
US8518279B1 (en) | 2010-11-15 | 2013-08-27 | Western Digital (Fremont), Llc | Method and system for providing a laser cavity for an energy assisted magnetic recording head |
US8456964B1 (en) | 2010-11-16 | 2013-06-04 | Western Digital (Fremont), Llc | Energy assisted magnetic recording head having a reflector for improving efficiency of the light beam |
US8462592B1 (en) | 2010-11-17 | 2013-06-11 | Western Digital (Fremont), Llc | Energy-assisted magnetic recording head having waveguide capable of providing small beam spots |
US8493694B2 (en) | 2010-11-22 | 2013-07-23 | Headway Technologies, Inc. | Fabrication of a coercivity hard bias using FePt containing film |
US8553369B2 (en) | 2010-11-30 | 2013-10-08 | Seagate Technology Llc | Magnetic element with improved stability and including at least one antiferromagnetic tab |
US8441756B1 (en) | 2010-12-16 | 2013-05-14 | Western Digital (Fremont), Llc | Method and system for providing an antiferromagnetically coupled writer |
US8456966B1 (en) | 2010-12-17 | 2013-06-04 | Western Digital (Fremont), Llc | Method and system for enhancing optical efficiency for an EAMR head |
US8670295B1 (en) | 2010-12-20 | 2014-03-11 | Western Digital (Fremont), Llc | Method and system for optically coupling a laser with a transducer in an energy assisted magnetic recording disk drive |
US8289821B1 (en) | 2010-12-21 | 2012-10-16 | Western Digital (Fremont), Llc | Method and system for pulsing EAMR disk drives |
US8486286B1 (en) | 2010-12-21 | 2013-07-16 | Western Digital (Fremont), Llc | Method and system for providing an energy assisted magnetic recording writer having an integrated NFT, heat sink, and pole |
US8593914B2 (en) | 2010-12-22 | 2013-11-26 | Western Digital (Fremont), Llc | Method and system for optically coupling a laser with a transducer in an energy assisted magnetic recording disk drive |
US8760819B1 (en) | 2010-12-23 | 2014-06-24 | Western Digital (Fremont), Llc | Magnetic recording sensor with sputtered antiferromagnetic coupling trilayer between plated ferromagnetic shields |
US8797686B1 (en) | 2010-12-23 | 2014-08-05 | Western Digital (Fremont), Llc | Magnetic recording transducer with short effective throat height and method of fabrication |
US9006704B2 (en) | 2011-02-11 | 2015-04-14 | Headway Technologies, Inc. | Magnetic element with improved out-of-plane anisotropy for spintronic applications |
US8588039B1 (en) | 2011-03-02 | 2013-11-19 | Western Digital (Fremont), Llc | Energy-assisted magnetic recording head having multiple cores of different lengths |
US8491802B1 (en) | 2011-03-08 | 2013-07-23 | Western Digital (Fremont), Llc | Method of forming a dielectric slope for EAMR and magnetic writer |
US8307540B1 (en) | 2011-03-10 | 2012-11-13 | Western Digital (Fremont), Llc | Method for providing an energy assisted magnetic recording (EAMR) transducer |
US8721902B1 (en) | 2011-03-11 | 2014-05-13 | Western Digital (Fremont), Llc | Method and system for providing an energy assisted magnetic recording writer having a heat sink and NFT |
US20120237878A1 (en) | 2011-03-18 | 2012-09-20 | Western Digital (Fremont), Llc | Method and system for providing a side shield for a perpendicular magnetic recording pole |
US8456961B1 (en) | 2011-03-22 | 2013-06-04 | Western Digital (Fremont), Llc | Systems and methods for mounting and aligning a laser in an electrically assisted magnetic recording assembly |
US8790527B1 (en) | 2011-03-22 | 2014-07-29 | Western Digital (Fremont), Llc | Method and system for manufacturing tapered waveguide structures in an energy assisted magnetic recording head |
US8405930B1 (en) | 2011-03-23 | 2013-03-26 | Western Digital (Fremont), Llc | Method and system for providing a transducer having dual, ABS recessed auxiliary poles on opposite sides of a main pole with non-magnetic spacer adjoining back portion of main pole and positioned between auxiliary poles |
US8597528B1 (en) | 2011-03-30 | 2013-12-03 | Western Digital (Fremont), Llc | Method and system for defining a read sensor using an ion mill planarization |
US8547659B1 (en) | 2011-05-09 | 2013-10-01 | Western Digital (Fremont), Llc | System for providing a transducer having a main coil and an additional coil separated from the main pole by a write shield |
US8871102B2 (en) | 2011-05-25 | 2014-10-28 | Western Digital (Fremont), Llc | Method and system for fabricating a narrow line structure in a magnetic recording head |
US8578594B2 (en) | 2011-06-06 | 2013-11-12 | Western Digital (Fremont), Llc | Process for fabricating a magnetic pole and shields |
US8686484B2 (en) | 2011-06-10 | 2014-04-01 | Everspin Technologies, Inc. | Spin-torque magnetoresistive memory element and method of fabricating same |
US8634280B1 (en) | 2011-06-21 | 2014-01-21 | Western Digital (Fremont), Llc | Method and system for providing an energy assisted magnetic recording writer having a ring shaped NFT |
US8563146B1 (en) | 2011-06-27 | 2013-10-22 | Western Digital (Fremont), Llc | Method and system for providing a magnetic recording pole having a dual sidewall angle |
US8705205B1 (en) | 2011-06-27 | 2014-04-22 | Western Digital (Fremont), Llc | Magnetic recording head having a dual sidewall angle |
US8325569B1 (en) | 2011-06-27 | 2012-12-04 | Western Digital (Fremont), Llc | EAMR head having improved optical coupling efficiency |
US8518832B1 (en) | 2011-06-27 | 2013-08-27 | Western Digital (Fremont), Llc | Process for masking and removal of residue from complex shapes |
US8506828B1 (en) | 2011-06-28 | 2013-08-13 | Western Digital (Fremont), Llc | Method and system for providing a magnetic recording transducer using an ion beam scan polishing planarization |
US8493695B1 (en) | 2011-06-28 | 2013-07-23 | Western Digital (Fremont), Llc | Method and system for providing a magnetic read transducer having an improved signal to noise ratio |
US8419953B1 (en) | 2011-06-28 | 2013-04-16 | Western Digital (Fremont), Llc | Method and system for removing an antiferromagnetic seed structure |
US8514517B1 (en) | 2011-06-30 | 2013-08-20 | Western Digital (Fremont), Llc | Systems and methods for providing hybrid coils for magnetic write heads |
US8480911B1 (en) | 2011-06-30 | 2013-07-09 | Western Digital (Fremont), Llc | Method and system for providing a read sensor in a magnetic recording transducer using focused ion beam scan polishing |
US8288204B1 (en) | 2011-08-30 | 2012-10-16 | Western Digital (Fremont), Llc | Methods for fabricating components with precise dimension control |
US8524068B2 (en) | 2011-08-30 | 2013-09-03 | Western Digital (Fremont), Llc | Low-rate electrochemical etch of thin film metals and alloys |
US8456967B1 (en) | 2011-10-12 | 2013-06-04 | Western Digital (Fremont), Llc | Systems and methods for providing a pole pedestal for microwave assisted magnetic recording |
US8320220B1 (en) | 2011-10-13 | 2012-11-27 | Western Digital (Fremont), Llc | Method and system for providing an energy assisted magnetic recording disk drive having a non-conformal heat spreader |
US8533937B1 (en) | 2011-10-18 | 2013-09-17 | Western Digital (Fremont), Llc | Method of forming a fully wrapped-around shielded PMR writer pole |
US8582238B1 (en) | 2011-10-21 | 2013-11-12 | Western Digital (Fremont), Llc | Systems and methods for providing perpendicular magnetic writers having gradient magnetic moment side shields |
US8419954B1 (en) | 2011-10-31 | 2013-04-16 | Western Digital (Fremont), Llc | Method for providing a side shield for a magnetic recording transducer |
US8693141B1 (en) | 2011-11-08 | 2014-04-08 | Western Digital (Fremont), Llc | Systems and methods for providing stacked writer leads for magnetic transducers |
US8491801B1 (en) | 2011-11-08 | 2013-07-23 | Western Digital (Fremont), Llc | Method and system for providing an NFT using a sacrificial NFT structure |
US8630068B1 (en) | 2011-11-15 | 2014-01-14 | Western Digital (Fremont), Llc | Method and system for providing a side shielded read transducer |
US8422176B1 (en) | 2011-11-15 | 2013-04-16 | Western Digital (Fremont), Llc | Method and system for providing a magnetic read transducer having a bilayer magnetic seed layer |
US8675318B1 (en) | 2011-11-22 | 2014-03-18 | Western Digital (Fremont), Llc | Method and system for providing a read transducer having a reduced shield-to-shield spacing |
US8607438B1 (en) | 2011-12-01 | 2013-12-17 | Western Digital (Fremont), Llc | Method for fabricating a read sensor for a read transducer |
US8555486B1 (en) | 2011-12-06 | 2013-10-15 | Western Digital (Fremont), Llc | Method for providing a pole in a magnetic recording transducer using a cathodic etch |
US8749790B1 (en) | 2011-12-08 | 2014-06-10 | Western Digital (Fremont), Llc | Structure and method to measure waveguide power absorption by surface plasmon element |
US8520336B1 (en) | 2011-12-08 | 2013-08-27 | Western Digital (Fremont), Llc | Magnetic recording head with nano scale pole tip bulge |
US8749920B1 (en) | 2011-12-16 | 2014-06-10 | Western Digital (Fremont), Llc | Magnetic recording head with dynamic fly height heating and having thermally controlled pole tip protrusion to control and protect reader element |
US8670214B1 (en) | 2011-12-20 | 2014-03-11 | Western Digital (Fremont), Llc | Method and system for providing enhanced thermal expansion for hard disk drives |
US8599520B1 (en) | 2011-12-20 | 2013-12-03 | Western Digital (Fremont), Llc | Method and system for providing a read transducer having an adaptive read sensor track width |
US8451563B1 (en) | 2011-12-20 | 2013-05-28 | Western Digital (Fremont), Llc | Method for providing a side shield for a magnetic recording transducer using an air bridge |
US8797684B1 (en) | 2011-12-20 | 2014-08-05 | Western Digital (Fremont), Llc | Magnetic writer configured for high data rate recording |
US8760823B1 (en) | 2011-12-20 | 2014-06-24 | Western Digital (Fremont), Llc | Method and system for providing a read transducer having soft and hard magnetic bias structures |
US8611035B1 (en) | 2012-02-06 | 2013-12-17 | Western Digital (Fremont), Llc | Capacitance sensor for determining a distance between a head and a magnetic storage medium |
US8670294B1 (en) | 2012-02-17 | 2014-03-11 | Western Digital (Fremont), Llc | Systems and methods for increasing media absorption efficiency using interferometric waveguides |
US8675455B1 (en) | 2012-02-17 | 2014-03-18 | Western Digital (Fremont), Llc | Systems and methods for controlling light phase difference in interferometric waveguides at near field transducers |
US9093639B2 (en) | 2012-02-21 | 2015-07-28 | Western Digital (Fremont), Llc | Methods for manufacturing a magnetoresistive structure utilizing heating and cooling |
US8946834B2 (en) | 2012-03-01 | 2015-02-03 | Headway Technologies, Inc. | High thermal stability free layer with high out-of-plane anisotropy for magnetic device applications |
US8670213B1 (en) | 2012-03-16 | 2014-03-11 | Western Digital (Fremont), Llc | Methods for tunable plating seed step coverage |
US8703397B1 (en) | 2012-03-29 | 2014-04-22 | Western Digital (Fremont), Llc | Method for providing side shields for a magnetic recording transducer |
US8520337B1 (en) | 2012-03-30 | 2013-08-27 | Western Digital (Fremont), Llc | Perpendicular magnetic recording writer pole with leading and trailing bevel side wall angles at air bearing surface |
US8493693B1 (en) | 2012-03-30 | 2013-07-23 | Western Digital (Fremont), Llc | Perpendicular magnetic recording transducer with AFM insertion layer |
US8860407B2 (en) | 2012-03-30 | 2014-10-14 | Western Digital (Fremont), Llc | Method and system for performing on-wafer testing of heads |
US8611054B1 (en) | 2012-04-11 | 2013-12-17 | Western Digital (Fremont), Llc | Antiferromagnetically-coupled soft bias magnetoresistive read head, and fabrication method therefore |
US8526275B1 (en) | 2012-04-27 | 2013-09-03 | Westerni Digital (Fremont), LLC | Systems and methods for dissipating heat from a near-field transducer in an energy assisted magnetic recording assembly |
US8753903B1 (en) | 2012-05-22 | 2014-06-17 | Western Digital (Fremont), Llc | Methods and apparatuses for performing wafer level characterization of a plasmon element |
US8582241B1 (en) | 2012-05-23 | 2013-11-12 | Western Digital (Fremont), Llc | Method and system for providing a magnetic transducer having a high moment bilayer magnetic seed layer for a trailing shield |
US8792208B1 (en) | 2012-05-25 | 2014-07-29 | Western Digital (Fremont), Llc | Method for providing side shields having non-conformal regions for a magnetic recording transducer |
US8582253B1 (en) | 2012-06-04 | 2013-11-12 | Western Digital (Fremont), Llc | Magnetic sensor having a high spin polarization reference layer |
US8724259B1 (en) | 2012-06-11 | 2014-05-13 | Western Digital (Fremont), Llc | Conformal high moment side shield seed layer for perpendicular magnetic recording writer |
US8619512B1 (en) | 2012-06-22 | 2013-12-31 | Western Digital (Fremont), Llc | Stress buffer for near-field transducer in energy assisted magnetic recording and methods for fabricating the same |
US8786983B1 (en) | 2012-06-25 | 2014-07-22 | Western Digital (Fremont), Llc | Magnetic writer having a low aspect ratio two layer coil |
US8565049B1 (en) | 2012-06-26 | 2013-10-22 | Western Digital (Fremont), Llc | Method and system for reducing thermal protrusion of an NFT |
US8628672B1 (en) | 2012-06-27 | 2014-01-14 | Western Digital (Fremont), Llc | Process for manufacturing a perpendicular magnetic recording writer pole with nonmagnetic bevel |
US8711528B1 (en) | 2012-06-29 | 2014-04-29 | Western Digital (Fremont), Llc | Tunnel magnetoresistance read head with narrow shield-to-shield spacing |
US8780508B2 (en) | 2012-06-29 | 2014-07-15 | Seagate Technology Llc | Magnetic element with biased side shield lamination |
US8797692B1 (en) | 2012-09-07 | 2014-08-05 | Western Digital (Fremont), Llc | Magnetic recording sensor with AFM exchange coupled shield stabilization |
US8625233B1 (en) | 2012-09-20 | 2014-01-07 | Western Digital (Fremont), Llc | System and method for fabricating a magnetic recording pole |
US8711518B1 (en) | 2012-09-27 | 2014-04-29 | Western Digital (Fremont), Llc | System and method for deposition in high aspect ratio magnetic writer heads |
US8760807B1 (en) | 2012-09-28 | 2014-06-24 | Western Digital (Fremont), Llc | Method for providing a wraparound shield for a magnetic recording transducer using a damascene process |
US8681594B1 (en) | 2012-09-28 | 2014-03-25 | Western Digital (Fremont), Llc | Method and system for improving laser alignment and optical transmission efficiency of an energy assisted magnetic recording head |
US8760822B1 (en) | 2012-11-28 | 2014-06-24 | Western Digital (Fremont), Llc | Method and system for providing a read transducer having an extended pinned layer and soft magnetic bias structures with improved stability |
US9053719B2 (en) | 2012-11-30 | 2015-06-09 | Western Digital (Fremont), Llc | Magnetoresistive sensor for a magnetic storage system read head, and fabrication method thereof |
US8531801B1 (en) | 2012-12-20 | 2013-09-10 | Western Digital (Fremont), Llc | Method and system for providing a read transducer having a composite magnetic shield with smooth interfaces |
US20140175050A1 (en) | 2012-12-21 | 2014-06-26 | Western Digital (Fremont), Llc | Method for providing a magnetic recording transducer including a wraparound shield and a rectangular pole |
US8760818B1 (en) | 2013-01-09 | 2014-06-24 | Western Digital (Fremont), Llc | Systems and methods for providing magnetic storage elements with high magneto-resistance using heusler alloys |
US8670217B1 (en) | 2013-02-11 | 2014-03-11 | HGST Netherlands B.V. | Scissoring-type current-perpendicular-to-the-plane (CPP) magnetoresistive sensor with free layers having shape anisotropy |
US8780505B1 (en) | 2013-03-12 | 2014-07-15 | Western Digital (Fremont), Llc | Method and system for providing a read transducer having an improved composite magnetic shield |
-
2014
- 2014-10-07 US US14/508,697 patent/US9007725B1/en active Active
-
2015
- 2015-09-30 CN CN201510640808.0A patent/CN105489229A/zh active Pending
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN113196078A (zh) * | 2019-08-28 | 2021-07-30 | 西部数据技术公司 | 双自由层tmr磁场传感器 |
CN113823330A (zh) * | 2020-06-19 | 2021-12-21 | 西部数据技术公司 | 横向偏置强度增强 |
CN113823330B (zh) * | 2020-06-19 | 2024-02-13 | 西部数据技术公司 | 横向偏置强度增强 |
Also Published As
Publication number | Publication date |
---|---|
US9007725B1 (en) | 2015-04-14 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US9396742B1 (en) | Magnetoresistive sensor for a magnetic storage system read head, and fabrication method thereof | |
CN114730569B (zh) | 含不同堆叠传感器的二维磁记录读取头结构及磁盘驱动器 | |
US9099125B1 (en) | Current-perpendicular-to-the-plane (CPP) magnetoresistive (MR) sensor structure with stacked sensors for minimization of the effect of head skew | |
CN105489229A (zh) | 具有在双铁磁自由层层压之间的正耦合的传感器 | |
US8873204B1 (en) | Current-perpendicular-to-the-plane (CPP) magnetoresistive (MR) sensor structure with multiple stacked sensors and center shield with CoFeB insertion layer | |
US7359162B2 (en) | Magnetoresistance effect element, magnetic head and magnetic recording and/or reproducing system | |
US7599151B2 (en) | Magnetic head with laminated side shields | |
JP2786601B2 (ja) | 磁気抵抗スピン・バルブ・センサおよびこのセンサを使用した磁気記録システム | |
JP4670890B2 (ja) | Cpp構造の磁気抵抗効果素子および磁気ディスク装置 | |
JP2007048972A (ja) | 磁気抵抗効果素子、基体、ウエハ、ヘッドジンバルアセンブリ、ハードディスク装置、磁気メモリ素子、磁気センサアセンブリ、および磁気抵抗効果素子の製造方法 | |
KR19990068085A (ko) | Mr 효과 소자 및 mr 센서, 이를 이용한 mr 감지 시스템 및 자기 기억 시스템 | |
US8467154B2 (en) | Magnetic sensors having perpendicular anisotropy free layer | |
US8711525B2 (en) | Magnetoresistive shield with coupled lateral magnet bias | |
JP2856165B2 (ja) | 磁気抵抗効果素子及びその製造方法 | |
US7576948B2 (en) | Magnetic field read sensor based on the extraordinary hall effect | |
US8913351B2 (en) | Magnetoresistance effect element, magnetic head, magnetic head assembly, and magnetic recording and reproducing device | |
US7782576B2 (en) | Exchange-coupling film incorporating stacked antiferromagnetic layer and pinned layer, and magnetoresistive element including the exchange-coupling film | |
US8029853B2 (en) | Fabrication process for magnetoresistive devices of the CPP type | |
US8953286B2 (en) | Magnetoresistive element with aluminum or iron concentration ratio changed in film-thickness direction | |
US7573686B2 (en) | Thin-film magnetic head including low-resistance TMR element | |
US20140211338A1 (en) | Magnetoresistive magnetic head and magnetic recording and reproducing apparatus | |
JP4471020B2 (ja) | Cpp構造の磁気抵抗効果素子および磁気ディスク装置 | |
JP2006351684A (ja) | 磁気抵抗効果素子、薄膜磁気ヘッド、ヘッドジンバルアセンブリ、およびハードディスク装置 | |
JP3683577B1 (ja) | 磁気抵抗効果素子、薄膜磁気ヘッド、ヘッドジンバルアセンブリおよび磁気ディスク装置 | |
JP4387923B2 (ja) | 磁気抵抗効果素子、薄膜磁気ヘッド、ヘッドジンバルアセンブリ、ヘッドアームアセンブリおよび磁気ディスク装置 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
C06 | Publication | ||
PB01 | Publication | ||
WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20160413 |
|
WD01 | Invention patent application deemed withdrawn after publication |