JP2010049781A - 平面型プラズモンアンテナを備えた熱アシスト磁気ヘッド - Google Patents
平面型プラズモンアンテナを備えた熱アシスト磁気ヘッド Download PDFInfo
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- JP2010049781A JP2010049781A JP2009122196A JP2009122196A JP2010049781A JP 2010049781 A JP2010049781 A JP 2010049781A JP 2009122196 A JP2009122196 A JP 2009122196A JP 2009122196 A JP2009122196 A JP 2009122196A JP 2010049781 A JP2010049781 A JP 2010049781A
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- plasmon antenna
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- field light
- planar plasmon
- magnetic head
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- 230000005291 magnetic effect Effects 0.000 title claims abstract description 120
- 230000001154 acute effect Effects 0.000 claims abstract description 21
- 230000005284 excitation Effects 0.000 claims abstract description 10
- 229910052751 metal Inorganic materials 0.000 claims description 15
- 239000002184 metal Substances 0.000 claims description 15
- 230000004907 flux Effects 0.000 claims description 6
- 230000000694 effects Effects 0.000 claims description 5
- 229910045601 alloy Inorganic materials 0.000 claims description 4
- 239000000956 alloy Substances 0.000 claims description 4
- 229910052802 copper Inorganic materials 0.000 claims description 3
- 229910052737 gold Inorganic materials 0.000 claims description 3
- 229910052697 platinum Inorganic materials 0.000 claims description 3
- 229910052709 silver Inorganic materials 0.000 claims description 3
- 238000009826 distribution Methods 0.000 description 15
- 238000010586 diagram Methods 0.000 description 9
- 239000004065 semiconductor Substances 0.000 description 9
- 239000000758 substrate Substances 0.000 description 8
- 239000000725 suspension Substances 0.000 description 7
- 230000005415 magnetization Effects 0.000 description 4
- 230000005294 ferromagnetic effect Effects 0.000 description 3
- 239000012212 insulator Substances 0.000 description 3
- 238000010030 laminating Methods 0.000 description 3
- 230000003287 optical effect Effects 0.000 description 3
- 230000001902 propagating effect Effects 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 2
- 239000000696 magnetic material Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000059 patterning Methods 0.000 description 2
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 1
- 230000005290 antiferromagnetic effect Effects 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
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
- G11B5/31—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
- G11B5/4806—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 specially adapted for disk drive assemblies, e.g. assembly prior to operation, hard or flexible disk drives
- G11B5/4866—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 specially adapted for disk drive assemblies, e.g. assembly prior to operation, hard or flexible disk drives the arm comprising an optical waveguide, e.g. for thermally-assisted recording
-
- 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
- G11B2005/001—Controlling recording characteristics of record carriers or transducing characteristics of transducers by means not being part of their structure
-
- 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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- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Optics & Photonics (AREA)
- Recording Or Reproducing By Magnetic Means (AREA)
- Magnetic Heads (AREA)
Abstract
【解決手段】平面型プラズモンアンテナは、近接場光発生用の励起光の進行方向をZ軸とした場合、Z軸を含むYZ平面上に形成されている。平面型プラズモンアンテナの長手方向がY軸に対して傾斜しており、YZ平面内の角部の角度が鋭角である。この角部は鋭角であり、励起光の照射に応答して強い近接場光を発生する。
【選択図】図1
Description
Claims (13)
- 近接場光発生用の励起光の進行方向をZ軸とし、互いに直交するY軸及びZ軸を含む平面上に、物理的に分離することなくただ1つだけ、形成された平面型プラズモンアンテナであって、Y軸に対して長手方向が傾斜しており、前記平面内の角部の角度αが鋭角であることを特徴とする平面型プラズモンアンテナ。
- 角度αは、15度以上であり、45度よりも小さいことを特徴とする請求項1に記載の平面型プラズモンアンテナ。
- 前記プラズモンアンテナは、金属からなることを特徴とする請求項1又は2に記載の平面型プラズモンアンテナ。
- 前記プラズモンアンテナは、Au、Ag、Cu及びPtからなる群から選択された少なくも1種の金属、又は、この群の中の少なくとも1種の金属を含む合金からなることを特徴とする請求項3に記載の平面型プラズモンアンテナ。
- 前記プラズモンアンテナは、Auからなることを特徴とする請求項3に記載の平面型プラズモンアンテナ。
- 前記平面に垂直な方向から見た前記平面型プラズモンアンテナの形状は、四角形であることを特徴とする請求項1乃至5のいずれか1項に記載の平面型プラズモンアンテナ。
- 前記平面に垂直な方向から見た前記平面型プラズモンアンテナの形状は、台形であることを特徴とする請求項6に記載の平面型プラズモンアンテナ。
- 前記平面に垂直な方向から見た前記平面型プラズモンアンテナの形状は、平行四辺形であることを特徴とする請求項6に記載の平面型プラズモンアンテナ。
- Z軸方向から見た前記平面型プラズモンアンテナの先端の形状は、長方形であることを特徴とする請求項1乃至8のいずれか1項に記載の平面型プラズモンアンテナ。
- Z軸方向から見た前記平面型プラズモンアンテナの先端の形状は、台形であることを特徴とする請求項1乃至8のいずれか1項に記載の平面型プラズモンアンテナ。
- 請求項1乃至10のいずれか1項に記載の平面型プラズモンアンテナの前記角部の近傍に配置された主磁極と、
前記主磁極内に磁束を通すコイルと、
前記励起光が内部を伝播するコアと、
を備えていることを特徴とする熱アシスト磁気ヘッド。 - 前記平面型プラズモンアンテナの厚み方向の延長線上に配置された磁気抵抗効果素子を更に備えることを特徴とする請求項11に記載の熱アシスト磁気ヘッド。
- 請求項12に記載の前記熱アシスト磁気ヘッドを搭載した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に対向した磁気記録媒体と、
を備えることを特徴とするハードディスク装置。
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US12/194,798 US7835101B2 (en) | 2008-08-20 | 2008-08-20 | Planar plasmon antenna for use in near-field recording |
Publications (1)
Publication Number | Publication Date |
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JP2010049781A true JP2010049781A (ja) | 2010-03-04 |
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JP2009122196A Pending JP2010049781A (ja) | 2008-08-20 | 2009-05-20 | 平面型プラズモンアンテナを備えた熱アシスト磁気ヘッド |
Country Status (2)
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US (1) | US7835101B2 (ja) |
JP (1) | JP2010049781A (ja) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2012190504A (ja) * | 2011-03-09 | 2012-10-04 | Seiko Instruments Inc | 記録ヘッド及び情報記録再生装置 |
US8400886B2 (en) | 2011-08-05 | 2013-03-19 | Tdk Corporation | Thermally-assisted magnetic recording head, head gimbal assembly and magnetic recording device |
KR20160002201A (ko) * | 2014-06-30 | 2016-01-07 | 삼성전자주식회사 | 자기공명영상용 rf 코일, 자기공명영상 시스템, 및 자기공명영상 시스템의 영상 생성 방법 |
Families Citing this family (9)
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---|---|---|---|---|
JP5134310B2 (ja) * | 2007-08-31 | 2013-01-30 | エイチジーエスティーネザーランドビーブイ | 磁気ヘッドスライダ |
US7821732B2 (en) * | 2008-09-25 | 2010-10-26 | Tdk Corporation | Thermally assisted magnetic head having an asymmetric plasmon antenna and manufacturing method thereof |
US8000178B2 (en) * | 2008-10-29 | 2011-08-16 | Tdk Corporation | Near-field light generating element utilizing surface plasmon |
US7936531B2 (en) * | 2008-11-07 | 2011-05-03 | Tdk Corporation | Thermally assisted magnetic head having an asymmetric plasmon antenna and manufacturing method thereof |
US8630152B2 (en) * | 2010-05-28 | 2014-01-14 | Headway Technologies, Inc. | 3-D self-focusing gap plasmon generator for TAMR |
US8553505B2 (en) * | 2010-11-24 | 2013-10-08 | HGST Netherlands B.V. | Thermally assisted magnetic write head employing a plasmonic antenna comprising an alloyed film to improve the hardness and manufacturability of the antenna |
JP5632066B2 (ja) * | 2011-02-22 | 2014-11-26 | 株式会社日立製作所 | 熱アシスト磁気記録ヘッド支持機構及びそれを用いた磁気ディスク装置 |
US9142233B1 (en) * | 2014-02-28 | 2015-09-22 | Western Digital (Fremont), Llc | Heat assisted magnetic recording writer having a recessed pole |
US9202481B1 (en) * | 2015-03-04 | 2015-12-01 | HGST Netherlands B.V. | Near-field transducer with compositionally graded material for heat assisted magnetic recording |
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JP2003114184A (ja) * | 2001-10-04 | 2003-04-18 | Hitachi Ltd | 近接場光発生装置 |
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JP2007305184A (ja) * | 2006-05-09 | 2007-11-22 | Seiko Instruments Inc | 近接場光記録素子、近接場光ヘッド及び情報記録再生装置 |
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WO2003060884A1 (en) * | 2002-01-07 | 2003-07-24 | Seagate Technology Llc | Write head and method for recording information on a data storage medium |
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JPWO2007105392A1 (ja) * | 2006-03-14 | 2009-07-30 | コニカミノルタオプト株式会社 | 記録ヘッド及び記録装置 |
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JP2009054867A (ja) * | 2007-08-28 | 2009-03-12 | Tdk Corp | 半導体レーザ素子構造体、熱アシスト磁気ヘッド及びその製造方法 |
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2008
- 2008-08-20 US US12/194,798 patent/US7835101B2/en active Active
-
2009
- 2009-05-20 JP JP2009122196A patent/JP2010049781A/ja active Pending
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JP2003114184A (ja) * | 2001-10-04 | 2003-04-18 | Hitachi Ltd | 近接場光発生装置 |
JP2004151046A (ja) * | 2002-11-01 | 2004-05-27 | Hitachi Ltd | 近接場光発生プローブ及び近接場光発生装置 |
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Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
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JP2012190504A (ja) * | 2011-03-09 | 2012-10-04 | Seiko Instruments Inc | 記録ヘッド及び情報記録再生装置 |
US8400886B2 (en) | 2011-08-05 | 2013-03-19 | Tdk Corporation | Thermally-assisted magnetic recording head, head gimbal assembly and magnetic recording device |
KR20160002201A (ko) * | 2014-06-30 | 2016-01-07 | 삼성전자주식회사 | 자기공명영상용 rf 코일, 자기공명영상 시스템, 및 자기공명영상 시스템의 영상 생성 방법 |
KR102207925B1 (ko) | 2014-06-30 | 2021-01-26 | 삼성전자주식회사 | 자기공명영상용 rf 코일, 자기공명영상 시스템, 및 자기공명영상 시스템의 영상 생성 방법 |
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US7835101B2 (en) | 2010-11-16 |
US20100046331A1 (en) | 2010-02-25 |
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