JP4835746B2 - 熱アシスト磁気ヘッド、ヘッドジンバルアセンブリ及びハードディスク装置。 - Google Patents
熱アシスト磁気ヘッド、ヘッドジンバルアセンブリ及びハードディスク装置。 Download PDFInfo
- Publication number
- JP4835746B2 JP4835746B2 JP2009249260A JP2009249260A JP4835746B2 JP 4835746 B2 JP4835746 B2 JP 4835746B2 JP 2009249260 A JP2009249260 A JP 2009249260A JP 2009249260 A JP2009249260 A JP 2009249260A JP 4835746 B2 JP4835746 B2 JP 4835746B2
- Authority
- JP
- Japan
- Prior art keywords
- magnetic head
- optical waveguide
- assisted magnetic
- laser
- photonic crystal
- 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.)
- Expired - Fee Related
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
- G11B5/02—Recording, reproducing, or erasing methods; Read, write or erase circuits therefor
-
- 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
- G11B5/31—Structure or manufacture of heads, e.g. inductive using thin films
- G11B5/3109—Details
- G11B5/313—Disposition of layers
- G11B5/3133—Disposition of layers including layers not usually being a part of the electromagnetic transducer structure and providing additional features, e.g. for improving heat radiation, reduction of power dissipation, adaptations for measurement or indication of gap depth or other properties of the structure
- G11B5/314—Disposition of layers including layers not usually being a part of the electromagnetic transducer structure and providing additional features, e.g. for improving heat radiation, reduction of power dissipation, adaptations for measurement or indication of gap depth or other properties of the structure where the layers are extra layers normally not provided in the transducing structure, e.g. optical layers
-
- 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
- G11B5/48—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed
- G11B5/58—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed with provision for moving the head for the purpose of maintaining alignment of the head relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following
- G11B5/60—Fluid-dynamic spacing of heads from record-carriers
- G11B5/6005—Specially adapted for spacing from a rotating disc using a fluid cushion
- G11B5/6088—Optical waveguide in or on flying head
-
- 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
- G11B2005/0002—Special dispositions or recording techniques
- G11B2005/0005—Arrangements, methods or circuits
-
- 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
- G11B2005/0002—Special dispositions or recording techniques
- G11B2005/0005—Arrangements, methods or circuits
- G11B2005/0021—Thermally assisted recording using an auxiliary energy source for heating the recording layer locally to assist the magnetization reversal
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Recording Or Reproducing By Magnetic Means (AREA)
- Magnetic Heads (AREA)
- Adjustment Of The Magnetic Head Position Track Following On Tapes (AREA)
Description
Y1:0.1〜0.8μm
Z1:0.1〜0.8μm
Y1:0.1〜0.8μm
Z1:0.1〜0.8μm
Y2:0.18〜0.36μm
Claims (8)
- 熱アシスト磁気ヘッドにおいて、
プラズモンアンテナと、
前記プラズモンアンテナが先端部に設けられた光導波路と、
前記光導波路内又は上に設けられ、これに入射したレーザ光のうち少なくとも一部を前記光導波路のコアに光結合させ、レーザ光が前記光導波路のコア内を進み、前記プラズモンアンテナに照射される回折格子と、
前記回折格子に前記レーザ光を照射する位置に配置され、フォトニック結晶面発光半導体レーザからなるレーザ素子と、
前記光導波路のコアを厚み方向に貫通し、情報書き込み用のコイルに電流を供給することで発生した書き込み磁界を、媒体対向面まで導き、前記プラズモンアンテナと前記媒体対向面において対向する磁極と、
を備え、
前記レーザ光が前記回折格子に重なる照射領域を有し、前記回折格子の設けられた領域におけるレーザ光強度分布は、前記光導波路の幅方向に沿って少なくとも2つの強度ピークを有し、これらの強度ピーク間の谷の位置から前記レーザ光が伝播する方向の延長線上に、前記磁極が配置されている、
ことを特徴とする熱アシスト磁気ヘッド。 - 前記回折格子が設けられた領域上のレーザ光強度分布の二次元形状は、リング状であることを特徴とする、
請求項1に記載の熱アシスト磁気ヘッド。 - 前記回折格子が設けられた領域上のレーザ光強度分布の二次元形状は、光導波路の幅方向に沿って離間した2つの楕円形状である、
ことを特徴とする請求項1に記載の熱アシスト磁気ヘッド。 - 前記フォトニック結晶面発光半導体レーザは、
化合物半導体からなる下部クラッド層と、
化合物半導体からなる上部クラッド層と、
前記下部クラッド層と前記上部クラッド層との間に設けられた活性層と、
前記上部クラッド層と前記活性層の間に設けられたフォトニック結晶層とを備えている、
ことを特徴とする請求項1に記載の熱アシスト磁気ヘッド。 - 前記フォトニック結晶層は、厚み方向に延びた複数の貫通孔を有しており、各貫通孔の二次元形状は円形状である、
ことを特徴とする請求項4に記載の熱アシスト磁気ヘッド。 - 前記フォトニック結晶層は、第1領域及び第2領域を有しており、
前記第1及び第2領域のそれぞれは、厚み方向に延びた複数の貫通孔を有しており、各貫通孔の二次元形状は三角形であり、
前記第1及び第2領域は、各領域内で隣接する貫通孔間の距離よりも大きな距離で、離間している、
ことを特徴とする請求項4に記載の熱アシスト磁気ヘッド。 - 請求項1に記載の熱アシスト磁気ヘッドと、
前記熱アシスト磁気ヘッドが取り付けられたサスペンションと、
を備えるヘッドジンバルアセンブリ。 - 請求項7に記載のヘッドジンバルアセンブリと、
前記熱アシスト磁気ヘッドの前記媒体対向面に対向する磁気記録媒体と、
を備えるハードディスク装置。
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US12/364,765 US7936643B2 (en) | 2009-02-03 | 2009-02-03 | Thermal assisted magnetic recording head having surface-emitting semiconductor laser |
US12/364,765 | 2009-02-03 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2010182394A JP2010182394A (ja) | 2010-08-19 |
JP4835746B2 true JP4835746B2 (ja) | 2011-12-14 |
Family
ID=42397513
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2009249260A Expired - Fee Related JP4835746B2 (ja) | 2009-02-03 | 2009-10-29 | 熱アシスト磁気ヘッド、ヘッドジンバルアセンブリ及びハードディスク装置。 |
Country Status (2)
Country | Link |
---|---|
US (1) | US7936643B2 (ja) |
JP (1) | JP4835746B2 (ja) |
Families Citing this family (8)
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WO2010007897A1 (ja) * | 2008-07-18 | 2010-01-21 | コニカミノルタオプト株式会社 | 偏向光学素子、光記録ヘッド及び光記録装置 |
WO2010146888A1 (ja) * | 2009-06-19 | 2010-12-23 | コニカミノルタオプト株式会社 | 光スポット形成素子、光記録ヘッド及び光記録装置 |
US8194509B2 (en) * | 2009-07-30 | 2012-06-05 | Tdk Corporation | Thermally-assisted magnetic recording head comprising light source with photonic-band layer |
US8223596B2 (en) * | 2009-10-19 | 2012-07-17 | Tdk Corporation | Thermally-assisted magnetic recording head with plane-emission type light source |
US8270791B2 (en) * | 2010-10-05 | 2012-09-18 | Tdk Corporation | Optical waveguide and thermally-assisted magnetic recording head therewith |
JP5832374B2 (ja) | 2011-10-13 | 2015-12-16 | 株式会社日立ハイテクノロジーズ | 走査プローブ顕微鏡のカンチレバー及びその製造方法、並びに熱アシスト磁気ヘッド素子の検査方法及びその装置 |
US9165591B2 (en) | 2013-08-07 | 2015-10-20 | Seagate Technology Llc | Grating based laser and power monitor for a heat-assisted magnetic recording device |
JP2016031772A (ja) | 2014-07-30 | 2016-03-07 | 株式会社日立ハイテクファインシステムズ | 熱アシスト磁気ヘッド素子の検査方法及びその装置 |
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JPH10162444A (ja) | 1996-07-25 | 1998-06-19 | Hitachi Maxell Ltd | 光磁気記録媒体と記録再生方法、及び記録再生装置 |
US5986978A (en) * | 1998-01-12 | 1999-11-16 | Read-Rite Corporation | Read/write head and method for magnetic reading and magneto-optical writing on a data storage medium |
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-
2009
- 2009-02-03 US US12/364,765 patent/US7936643B2/en not_active Expired - Fee Related
- 2009-10-29 JP JP2009249260A patent/JP4835746B2/ja not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
US7936643B2 (en) | 2011-05-03 |
JP2010182394A (ja) | 2010-08-19 |
US20100195239A1 (en) | 2010-08-05 |
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