JP5270829B2 - 近接場光アシスト磁気記録ヘッド及びそれを用いた記録装置 - Google Patents
近接場光アシスト磁気記録ヘッド及びそれを用いた記録装置 Download PDFInfo
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- JP5270829B2 JP5270829B2 JP2006339601A JP2006339601A JP5270829B2 JP 5270829 B2 JP5270829 B2 JP 5270829B2 JP 2006339601 A JP2006339601 A JP 2006339601A JP 2006339601 A JP2006339601 A JP 2006339601A JP 5270829 B2 JP5270829 B2 JP 5270829B2
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- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000005347 demagnetization Effects 0.000 description 1
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- 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
- G11B5/3116—Shaping of layers, poles or gaps for improving the form of the electrical signal transduced, e.g. for shielding, contour effect, equalizing, side flux fringing, cross talk reduction between heads or between heads and information tracks
-
- 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
- G11B11/00—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor
- G11B11/10—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field
- G11B11/105—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field using a beam of light or a magnetic field for recording by change of magnetisation and a beam of light for reproducing, i.e. magneto-optical, e.g. light-induced thermomagnetic recording, spin magnetisation recording, Kerr or Faraday effect reproducing
- G11B11/10532—Heads
- G11B11/10534—Heads for recording by magnetising, demagnetising or transfer of magnetisation, by radiation, e.g. for thermomagnetic recording
- G11B11/10536—Heads for recording by magnetising, demagnetising or transfer of magnetisation, by radiation, e.g. for thermomagnetic recording using thermic beams, e.g. lasers
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B11/00—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor
- G11B11/10—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field
- G11B11/105—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field using a beam of light or a magnetic field for recording by change of magnetisation and a beam of light for reproducing, i.e. magneto-optical, e.g. light-induced thermomagnetic recording, spin magnetisation recording, Kerr or Faraday effect reproducing
- G11B11/1055—Disposition or mounting of transducers relative to record carriers
- G11B11/10552—Arrangements of transducers relative to each other, e.g. coupled heads, optical and magnetic head on the same base
- G11B11/10554—Arrangements of transducers relative to each other, e.g. coupled heads, optical and magnetic head on the same base the transducers being disposed on the same side of the carrier
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B11/00—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor
- G11B11/10—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field
- G11B11/105—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field using a beam of light or a magnetic field for recording by change of magnetisation and a beam of light for reproducing, i.e. magneto-optical, e.g. light-induced thermomagnetic recording, spin magnetisation recording, Kerr or Faraday effect reproducing
- G11B11/1055—Disposition or mounting of transducers relative to record carriers
- G11B11/1058—Flying heads
-
- 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
-
- 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
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Recording Or Reproducing By Magnetic Means (AREA)
- Optical Head (AREA)
- Magnetic Heads (AREA)
Description
そこで本発明は以上の点に鑑みてなされたものであり、近接場光及び磁界の広がりを抑制して書き込みの信頼性を向上することができる近接場光アシスト磁気記録ヘッド及びそれを用いた記録装置を提供することを目的とする。
以下、本発明に係る近接場光アシスト磁気記録ヘッド及びそれを用いた記録装置の第1実施形態を、図1から図7を参照して説明する。本実施形態の記録装置1は、図1に示すように、近接場光アシスト磁気記録ヘッド2と、ディスクDの面(磁気記録媒体の表面)に平行な方向に移動可能とされ、ディスクDの面に平行で且つ互いに直交する2軸(X軸、Y軸とする)回りに回動自在な状態で近接場光アシスト磁気記録ヘッド2を先端側で支持するサスペンションアーム3と、光導波路4の基端側から該光導波路4に対して光束を入射させる光信号コントローラー(光源)5と、サスペンションアーム3の基端側を支持すると共に、サスペンションアーム3をディスクDの面に平行なXY方向に向けてスキャン移動させるアクチュエーター6と、ディスクを一定方向に回転させるスピンドルモーター(回転駆動部)7と、情報に応じて変調した電流を近接場光アシスト磁気記録ヘッド2に対して供給すると共に、光信号コントローラー5の作動を制御する制御部(図示略)と、これら各構成品を内部に収容するハウジング8とを備えている。
2 近接場光アシスト磁気記録ヘッド
3 サスペンションアーム
4 光導波路
5 光信号コントローラー(光源)
6 アクチュエーター
7 スピンドルモーター(回転駆動部)
8 ハウジング
8a 凹部
9 軸受
10 キャリッジ
11 マイクロレンズ
13 再生素子
14 磁気回路
15 微細ギャップ
16 ガイド溝
17 ミラー面
18 コイル
21 基板
22 空気浮上面
23 再生用磁気回路
31 主磁極基部
32 主磁極
33 副磁極基部
34 副磁極側面部
35 絶縁膜
36 副磁極
41 ティップ
51 レジスト
52 再生素子基礎部ティップ
IL 入射光
Claims (8)
- 先端に近接場光を発生させる錐状ティップと、前記近接場光によって加熱された媒体表面の微小領域に磁界を与えることにより前記微小領域に磁化反転を生じさせる磁気記録素子とを持つ近接場光アシスト磁気記録ヘッドであって、
前記磁気記録素子は、前記媒体表面に対して略垂直方向に磁界を与える主磁極と、前記主磁極から与えられた磁界の一部を吸収する副磁極と、前記主磁極と前記副磁極との間に配置される絶縁膜とを含み、
前記錐状ティップは、前記媒体表面と向い合う前記先端において前記近接場光を発生させる開口部と、前記開口部を囲む縁部分の少なくとも一部を構成する第一側面とを含み、
前記主磁極は、前記第一側面に配置される第一薄膜を含み、
前記副磁極は、前記第一薄膜の両側のうち、前記第一側面が配置されている側とは逆側に配置され、前記主磁極および前記開口部を取り囲むように配置されており、
前記絶縁膜は、前記第一薄膜と前記副磁極との間に配置されることを特徴とする近接場光アシスト磁気記録ヘッド。 - 前記絶縁膜は、前記第一薄膜と、前記錐状ティップの側面のうち前記第一側面以外の全ての側面とを覆い、
前記副磁極は、前記絶縁膜の両側のうち、前記第一薄膜が配置されている側とは逆側の側面の全周を囲むことを特徴とする請求項1に記載の近接場光アシスト磁気記録ヘッド。 - 前記錐状ティップは、平面基板をエッチング加工することにより形成されたものであることを特徴とする請求項1乃至2のいずれかに記載の近接場光アシスト磁気記録ヘッド。
- 前記媒体表面からの空気浮上力を受ける空気浮上面を持ち、前記空気浮上面が前記錐状ティップと高さが同一であることを特徴とする請求項1または2のいずれかに記載の近接場光アシスト磁気記録ヘッド。
- 前記媒体表面に記録された情報を再生する磁気抵抗素子を持ち、前記磁気抵抗素子が錐状形状を持つことを特徴とする請求項1または2のいずれかに記載の近接場光アシスト磁気記録ヘッド。
- 前記錐状ティップと前記空気浮上面と前記磁気抵抗素子との高さが同一であることを特徴とする請求項5に記載の近接場光アシスト磁気記録ヘッド。
- 前記平面基板は透明であり、
前記錐状ティップは、前記錐状ティップの両側のうち、前記媒体が配置されている側とは逆側から光が前記錐状ティップに入射されることで前記近接場光を発生することを特徴とする請求項3に記載の近接場光アシスト磁気記録ヘッド。 - 回転する前記媒体表面からの空気浮上力と、前記錐状ティップを支持するサスペンションアームからの荷重との均衡によって前記媒体表面から所定の高さで浮上する空気浮上型ヘッドを持つ記録装置において、前記空気浮上型ヘッドが請求項1から7のいずれかに記載の近接場光アシスト磁気記録ヘッドであることを特徴とする記録装置。
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
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JP2006339601A JP5270829B2 (ja) | 2006-12-18 | 2006-12-18 | 近接場光アシスト磁気記録ヘッド及びそれを用いた記録装置 |
US12/448,262 US8284636B2 (en) | 2006-12-18 | 2007-12-10 | Near-field thermally assisted magnetic recording head and recording apparatus thereof |
PCT/JP2007/073808 WO2008075582A1 (ja) | 2006-12-18 | 2007-12-10 | 近接場光アシスト磁気記録ヘッド及びそれを用いた記録装置 |
Applications Claiming Priority (1)
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JP2006339601A JP5270829B2 (ja) | 2006-12-18 | 2006-12-18 | 近接場光アシスト磁気記録ヘッド及びそれを用いた記録装置 |
Publications (2)
Publication Number | Publication Date |
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JP2008152854A JP2008152854A (ja) | 2008-07-03 |
JP5270829B2 true JP5270829B2 (ja) | 2013-08-21 |
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JP2006339601A Expired - Fee Related JP5270829B2 (ja) | 2006-12-18 | 2006-12-18 | 近接場光アシスト磁気記録ヘッド及びそれを用いた記録装置 |
Country Status (3)
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US (1) | US8284636B2 (ja) |
JP (1) | JP5270829B2 (ja) |
WO (1) | WO2008075582A1 (ja) |
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US9739883B2 (en) | 2014-05-16 | 2017-08-22 | Elwha Llc | Systems and methods for ultrasonic velocity and acceleration detection |
US9437002B2 (en) * | 2014-09-25 | 2016-09-06 | Elwha Llc | Systems and methods for a dual modality sensor system |
US9618618B2 (en) | 2014-03-10 | 2017-04-11 | Elwha Llc | Systems and methods for ultrasonic position and motion detection |
Family Cites Families (11)
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DE69940577D1 (de) * | 1998-11-09 | 2009-04-23 | Seiko Instr Inc | Nahfeld Abtastkopf und Herstellungsverfahren dafür |
JP3366582B2 (ja) * | 1998-12-17 | 2003-01-14 | シャープ株式会社 | 薄膜磁気ヘッド及びその製造方法 |
JP2000187877A (ja) * | 1998-12-24 | 2000-07-04 | Sharp Corp | 光導波路素子および導波路型光ヘッド |
JP2002184015A (ja) * | 2000-12-13 | 2002-06-28 | Seiko Instruments Inc | 情報記録再生装置 |
US6954340B2 (en) * | 2001-05-23 | 2005-10-11 | Seagate Technology Llc | Perpendicular magnetic recording head with nonmagnetic write gap greater than twice side shield gap distance |
JP4032689B2 (ja) * | 2001-10-04 | 2008-01-16 | 株式会社日立製作所 | 近接場光を用いた測定装置/記録再生装置 |
JP2004118918A (ja) * | 2002-09-25 | 2004-04-15 | Fuji Xerox Co Ltd | 光ヘッドおよびその製造方法 |
US7911882B2 (en) * | 2005-12-16 | 2011-03-22 | Tdk Corporation | Thin-film magnetic head with near-field-light-generating layer |
US7855937B2 (en) * | 2008-09-05 | 2010-12-21 | Tdk Corporation | Near-field light generating element and heat-assisted magnetic recording head utilizing surface plasmon mode |
US7821732B2 (en) * | 2008-09-25 | 2010-10-26 | Tdk Corporation | Thermally assisted magnetic head having an asymmetric plasmon antenna and manufacturing method thereof |
US7936531B2 (en) * | 2008-11-07 | 2011-05-03 | Tdk Corporation | Thermally assisted magnetic head having an asymmetric plasmon antenna and manufacturing method thereof |
-
2006
- 2006-12-18 JP JP2006339601A patent/JP5270829B2/ja not_active Expired - Fee Related
-
2007
- 2007-12-10 US US12/448,262 patent/US8284636B2/en not_active Expired - Fee Related
- 2007-12-10 WO PCT/JP2007/073808 patent/WO2008075582A1/ja active Application Filing
Also Published As
Publication number | Publication date |
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US8284636B2 (en) | 2012-10-09 |
US20100002550A1 (en) | 2010-01-07 |
JP2008152854A (ja) | 2008-07-03 |
WO2008075582A1 (ja) | 2008-06-26 |
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