JP5668965B2 - 熱アシスト磁気記録装置、および統合された熱アシスト磁気記録装置を作成するための方法 - Google Patents
熱アシスト磁気記録装置、および統合された熱アシスト磁気記録装置を作成するための方法 Download PDFInfo
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- JP5668965B2 JP5668965B2 JP2010143907A JP2010143907A JP5668965B2 JP 5668965 B2 JP5668965 B2 JP 5668965B2 JP 2010143907 A JP2010143907 A JP 2010143907A JP 2010143907 A JP2010143907 A JP 2010143907A JP 5668965 B2 JP5668965 B2 JP 5668965B2
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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
- G11B5/127—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
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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
- G11B5/10—Structure or manufacture of housings or shields for heads
- G11B5/102—Manufacture of housing
-
- 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
- G11B5/3163—Fabrication methods or processes specially adapted for a particular head structure, e.g. using base layers for electroplating, using functional layers for masking, using energy or particle beams for shaping the structure or modifying the properties of the basic layers
- G11B5/3173—Batch fabrication, i.e. producing a plurality of head structures in one batch
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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
- G11B5/48—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
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
- G11B7/12—Heads, e.g. forming of the optical beam spot or modulation of the optical beam
- G11B7/135—Means for guiding the beam from the source to the record carrier or from the record carrier to the detector
- G11B7/1387—Means for guiding the beam from the source to the record carrier or from the record carrier to the detector using the near-field effect
-
- 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
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Electromagnetism (AREA)
- Recording Or Reproducing By Magnetic Means (AREA)
- Adjustment Of The Magnetic Head Position Track Following On Tapes (AREA)
- Optical Head (AREA)
- Magnetic Heads (AREA)
Description
より高い磁気記憶容量に対する要望の増加に応じて、1TB/in2に迫る面記録密度が考えられている。この目標を達成するために要求される50nm未満のビットサイズは、記憶されたデータの保持寿命に超常磁性の不安定性が影響を与える範囲内にある。超常磁性の不安定性は、記録媒体の粒子体積がビット当たりの粒子数を維持するために減少するにつれて問題となる。超常磁性効果は、不等式KuV/kBT>70がもはや維持できないほど粒子体積Vが十分に小さい場合に最も顕著である。Kuは、材料の磁気結晶異方性エネルギ密度であり、kBはボルツマン定数であり、Tは絶対温度である。この不等式が満たされない場合、熱エネルギは記憶されたビットを消磁し得る。面密度を高めるために粒子サイズが減少するにつれて、所与のKuおよび温度Tについてしきい値に至り、安定したデータ記憶がもはや実現可能ではなくなってしまう。
統合された熱アシスト磁気記録(HAMR)装置は、レーザを担持するスライダと、ビーム成形器と、ミラーと、書込磁極と、導波路と、近接場変換器とを備える。レーザはスライダの上面上に搭載され、光ビームを放出する。ビーム成形器は、レーザからの光ビームがコリメートされ、または集束されるように、スライダに取付けられる。ミラーは、コリメートされたまたは集束された光ビームをミラーがスライダ上に搭載された導波路に向けるように、スライダに取付けられる。近接場変換器は書込磁極に隣接して位置付けられ、導波路からエネルギを受け、磁気媒体の領域を加熱するためのプラズモンを生成する。
図1は、磁気媒体16のトラック14の上方にスライダ12を位置付けるための作動システムを含むディスクドライブ10の斜視図である。ディスクドライブ10の特定の構成が、この発明の説明を容易にするために示されており、この発明の範囲を多少なりとも限定するよう意図されてはいない。ディスクドライブ10は、スピンドル上のアクチュエータアーム20を軸22を中心として回転させるよう構成されたボイスコイルモータ(VCM)18を含む。ロードビーム24がヘッド搭載ブロック26でアクチュエータアーム20に接続されている。ロードビーム24の一端にサスペンション28が接続されており、スライダ12はサスペンション28に取付けられている。磁気媒体16は軸30を中心として回転し、そのためスライダ12は風損に遭遇し、それは磁気媒体16の表面上方で少しの距離離れて空中に持上げられる。磁気媒体16の各トラック14は、データを記憶するためのデータ記憶セルの配列を用いてフォーマット化される。スライダ12は、磁気媒体16のトラック14上でデータを読出すおよび/または書込むための磁気変換器(図1には図示せず)を担持する。磁気変換器は、追加の電磁エネルギを利用して媒体16の表面を加熱し、熱アシスト磁気記録(HAMR)と呼ばれるプロセスによる記録を容易にする。
Claims (9)
- 上面、底面、および後端を有するスライダと、
前記スライダの後端上の導波路と、
導波路からエネルギを受けるよう位置付けられ、磁気媒体の領域を加熱するためのプラズモンを生成する近接場変換器と、
前記スライダによって担持され、前記近接場変換器に隣接する書込磁極と、
前記スライダの上面に搭載され、レーザビームを生成するための固体レーザと、
前記スライダの上面に搭載され、前記レーザビームをコリメートするかまたは集束するためのビーム成形器とを備え、
前記固体レーザおよび前記ビーム成形器は、前記固体レーザを前記スライダに光学的に結合するように構成されたカバー内に設けられ、さらに
前記スライダの上面に搭載され、コリメートされたまたは集束された光ビームを導波路へと向けるためのミラーと、
前記スライダの上面に搭載され、前記固体レーザからの前記レーザビームと前記ビーム成形器とが一列に並ぶように前記固体レーザを支持し、前記固体レーザの材料とほぼ同一の熱膨張係数を有する材料によって形成される台座とを備える、熱アシスト磁気記録(HAMR)装置。 - 前記カバーは、前記カバーをディスクドライブに電気的に結合するように構成されたパッドを搭載した表面を有し、
前記HAMR装置は、前記スライダと前記カバーとの間に複数のはんだ付け電気接続部を備える、請求項1に記載のHAMR装置。 - 前記カバーは、前記カバーをディスクドライブに電気的に結合するように構成されたパッドを搭載した表面を有し、
前記HAMR装置は、前記スライダと前記カバーとの間に複数のワイヤボンディング電気接続部を備える、請求項1に記載のHAMR装置。 - 前記ビーム成形器は、前記カバーの後端で担持されたコリメーティングレンズまたは集束レンズを含む、請求項1に記載のHAMR装置。
- 電気リード線が前記カバーの上面上方に延在し、
前記電気リード線は、前記スライダをディスクドライブに結合するように構成される、請求項1に記載のHAMR装置。 - 前記カバーは前記スライダに接合されている、請求項1に記載のHAMR装置。
- 前記カバーは前記固体レーザの周囲に気密封止を作り出す、請求項6に記載のHAMR装置。
- 前記導波路は、前記ミラーからコリメートされたまたは集束されたレーザビームを受けるために、上端に結合格子を有する、請求項1に記載のHAMR装置。
- 前記導波路は、前記結合格子が受けたコリメートされたまたは集束されたレーザビームを、前記近接場変換器へと向けるよう構成されている、請求項8に記載のHAMR装置。
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US12/491,914 US8254212B2 (en) | 2009-06-25 | 2009-06-25 | Integrated heat assisted magnetic recording device |
US12/491,914 | 2009-06-25 |
Publications (2)
Publication Number | Publication Date |
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JP2011008908A JP2011008908A (ja) | 2011-01-13 |
JP5668965B2 true JP5668965B2 (ja) | 2015-02-12 |
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JP2010143907A Expired - Fee Related JP5668965B2 (ja) | 2009-06-25 | 2010-06-24 | 熱アシスト磁気記録装置、および統合された熱アシスト磁気記録装置を作成するための方法 |
Country Status (3)
Country | Link |
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US (1) | US8254212B2 (ja) |
JP (1) | JP5668965B2 (ja) |
CN (1) | CN101937684B (ja) |
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JP2008059645A (ja) * | 2006-08-30 | 2008-03-13 | Hitachi Ltd | 記録用ヘッド |
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JP2009259359A (ja) * | 2008-04-18 | 2009-11-05 | Hitachi Global Storage Technologies Netherlands Bv | ヘッドスライダ及びディスク装置 |
JP5322898B2 (ja) * | 2009-11-25 | 2013-10-23 | 株式会社日立製作所 | 熱アシスト磁気ヘッドスライダ及びヘッドジンバルアセンブリ |
US8228634B2 (en) * | 2010-01-07 | 2012-07-24 | Headway Technologies, Inc. | Integrated focusing elements for TAMR light delivery system |
-
2009
- 2009-06-25 US US12/491,914 patent/US8254212B2/en active Active
-
2010
- 2010-06-24 JP JP2010143907A patent/JP5668965B2/ja not_active Expired - Fee Related
- 2010-06-24 CN CN201010217369.XA patent/CN101937684B/zh active Active
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CN101937684A (zh) | 2011-01-05 |
US8254212B2 (en) | 2012-08-28 |
JP2011008908A (ja) | 2011-01-13 |
US20100328807A1 (en) | 2010-12-30 |
CN101937684B (zh) | 2013-04-03 |
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