JP5759884B2 - 熱アシスト磁気記録ヘッドならびに光学近接場変換器内の熱エネルギを放散する方法およびシステム - Google Patents
熱アシスト磁気記録ヘッドならびに光学近接場変換器内の熱エネルギを放散する方法およびシステム Download PDFInfo
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- JP5759884B2 JP5759884B2 JP2011278148A JP2011278148A JP5759884B2 JP 5759884 B2 JP5759884 B2 JP 5759884B2 JP 2011278148 A JP2011278148 A JP 2011278148A JP 2011278148 A JP2011278148 A JP 2011278148A JP 5759884 B2 JP5759884 B2 JP 5759884B2
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- heat sink
- field transducer
- optical near
- magnetic recording
- optical
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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
- G11B5/187—Structure or manufacture of the surface of the head in physical contact with, or immediately adjacent to the recording medium; Pole pieces; Gap features
-
- 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
- G11B5/127—Structure or manufacture of heads, e.g. inductive
-
- 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)
- Magnetic Heads (AREA)
Description
本明細書において記載されクレームされている実現例は、光学近接場変換器およびヒートシンクアセンブリを備えた熱アシスト磁気記録ヘッドを提供する。ヒートシンクアセンブリは、光学近接場変換器と熱伝導接触し、かつ対流冷却面を有する。
熱アシスト磁気記録(HAMR:Heat Assisted Magnetic Recording)技術は、データを、安定性が高い媒体に、集束させた光を用いてまず媒体を加熱することにより、磁気記録する。HAMR技術は、鉄と白金の合金といった安定性が高い磁性化合物を利用して媒体を構成する。こうした材料は、単一ビットをより小さな領域に記憶することができるが、磁気媒体記憶に使用される従来技術を制限するのと同じ超常磁性効果による制限は受けない。しかしながら、この高安定性の磁性化合物は、媒体上の磁性配向を変化させるために、まず加熱しなければならない。
Claims (17)
- 熱アシスト磁気記録ヘッドであって、
光学近接場変換器と、
前記光学近接場変換器と熱伝導接触するヒートシンクアセンブリとを備え、
前記ヒートシンクアセンブリは、対流冷却面を有し、かつ書込極と前記光学近接場変換器との間に設けられた第1のヒートシンクを含み、
前記対流冷却面は、前記光学近接場変換器と接している、熱アシスト磁気記録ヘッド。 - 前記ヒートシンクアセンブリは、少なくとも部分的に前記光学近接場変換器を封入する、請求項1に記載の熱アシスト磁気記録ヘッド。
- 前記ヒートシンクアセンブリは、前記光学近接場変換器から延びる1対の翼状部分または円錐台形状の部分を含む、請求項1に記載の熱アシスト磁気記録ヘッド。
- 前記ヒートシンクアセンブリは、前記書込極上の金属被覆部を含む、請求項1に記載の熱アシスト磁気記録ヘッド。
- 前記ヒートシンクアセンブリは、第2のヒートシンクとを含み、前記第1のヒートシンクは前記第2のヒートシンクと熱伝導接触する、請求項1に記載の
熱アシスト磁気記録ヘッド。 - 前記ヒートシンクアセンブリは、前記熱アシスト磁気記録ヘッドのエアベアリング面を占める、請求項1〜5のいずれか1項に記載の熱アシスト磁気記録ヘッド。
- 前記ヒートシンクアセンブリは誘電体または非磁性金属を含む、請求項1〜6のいずれか1項に記載の熱アシスト磁気記録ヘッド。
- 前記対流冷却面は、磁気記録媒体に対向するエアベアリング面である、請求項1〜7のいずれか1項に記載の熱アシスト磁気記録ヘッド。
- 光学近接場変換器内の熱エネルギを放散する方法であって、
前記光学近接場変換器内に熱エネルギを発生するステップと、
前記光学近接場変換器内の熱エネルギの少なくとも一部を、前記光学近接場変換器と伝導接触するヒートシンクアセンブリに伝導させるステップと、
前記ヒートシンクアセンブリに伝導させた熱エネルギの少なくとも一部を、対流冷却面のエアベアリングに対流によって伝達するステップとを含み、
前記ヒートシンクアセンブリは、前記対流冷却面を有し、かつ書込極と前記光学近接場変換器との間に設けられた第1のヒートシンクを含み、
前記対流冷却面は、前記光学近接場変換器と接している、方法。 - 前記ヒートシンクアセンブリは第2のヒートシンクとを含み、前記第1のヒートシンクは前記第2のヒートシンクと熱伝導接触する、請求項9に記載の方法。
- 前記ヒートシンクアセンブリは、熱アシスト磁気記録ヘッドのエアベアリング面を占める、請求項9または10に記載の方法。
- 前記対流冷却面は磁気記録媒体に対向する、請求項9〜11のいずれか1項に記載の方法。
- 光学近接場変換器内の熱エネルギを放散するシステムであって、
前記光学近接場変換器と伝導接触する第1のヒートシンクと、
前記第1のヒートシンクと伝導接触する第2のヒートシンクと、
書込極とを備え、
前記第1のヒートシンクおよび前記第2のヒートシンクのうち一方または双方が、対流冷却面を含み、前記書込極と前記光学近接場変換器との間に設けられ、かつ前記光学近接場変換器と接触しており、
前記対流冷却面は、前記光学近接場変換器と接している、システム。 - 前記第1のヒートシンクおよび前記第2のヒートシンクのうち一方または双方は、少なくとも部分的に前記光学近接場変換器を封入する、請求項13に記載のシステム。
- 前記第1のヒートシンクおよび前記第2のヒートシンクのうち一方または双方は、前記光学近接場変換器から延びる1対の翼状部分または円錐台形状の部分を含む、請求項13に記載のシステム。
- 前記第1のヒートシンクおよび前記第2のヒートシンクのうち一方または双方は、前記書込極とも伝導接触し、前記書込極上の金属被覆部を含む、請求項13に記載のシステム。
- 前記対流冷却面は、磁気記録媒体に対向するエアベアリング面である、請求項13〜16のいずれか1項に記載のシステム。
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US12/976,559 US9431036B2 (en) | 2010-12-22 | 2010-12-22 | Heat-sinks for optical near-field transducers |
US12/976,559 | 2010-12-22 |
Publications (3)
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JP2012133873A JP2012133873A (ja) | 2012-07-12 |
JP2012133873A5 JP2012133873A5 (ja) | 2012-08-23 |
JP5759884B2 true JP5759884B2 (ja) | 2015-08-05 |
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JP2011278148A Expired - Fee Related JP5759884B2 (ja) | 2010-12-22 | 2011-12-20 | 熱アシスト磁気記録ヘッドならびに光学近接場変換器内の熱エネルギを放散する方法およびシステム |
Country Status (4)
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US (1) | US9431036B2 (ja) |
JP (1) | JP5759884B2 (ja) |
KR (1) | KR101349904B1 (ja) |
CN (1) | CN102592608B (ja) |
Families Citing this family (25)
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US8427925B2 (en) | 2010-02-23 | 2013-04-23 | Seagate Technology Llc | HAMR NFT materials with improved thermal stability |
US9053737B2 (en) | 2010-12-22 | 2015-06-09 | Seagate Technology Llc | Heat assisted magnetic recording devices |
US9129625B2 (en) | 2012-01-16 | 2015-09-08 | Seagate Technology Llc | Perpendicular magnetic recording heads including components made of nickel alloys |
US8259540B1 (en) * | 2012-01-16 | 2012-09-04 | Seagate Technology Llc | Heat assisted magnetic recording (HAMR) heads including components made of nickel alloys |
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 |
US8619516B1 (en) * | 2012-08-10 | 2013-12-31 | HGST Netherlands B.V. | Thermally-assisted recording (TAR) head with conductive layer between the near-field transducer and the write pole |
US9070386B2 (en) | 2012-12-04 | 2015-06-30 | Seagate Technology Llc | Polarization rotator |
US9304253B2 (en) * | 2013-03-07 | 2016-04-05 | Seagate Technology Llc | Near-field transducer with flare peg |
US9378757B2 (en) | 2013-03-07 | 2016-06-28 | Seagate Technology Llc | Methods of making a near field transducer with a flare peg |
US8891205B2 (en) | 2013-04-16 | 2014-11-18 | Seagate Technology Llc | Apparatuses and methods for controlling near-field transducer to write pole spacing |
US20140376351A1 (en) | 2013-06-24 | 2014-12-25 | Seagate Technology Llc | Materials for near field transducers and near field transducers containing same |
JP2015011728A (ja) * | 2013-06-26 | 2015-01-19 | 株式会社東芝 | 磁気ヘッド、磁気ディスク装置、及び磁気ヘッドの制御方法 |
US9042209B2 (en) | 2013-07-30 | 2015-05-26 | HGST Netherlands B.V. | E-antenna near field transducer with thermal shunt to return pole |
US8923100B1 (en) * | 2013-09-11 | 2014-12-30 | Seagate Technology Llc | Multi-portion heat sink for use with write pole and near-field transducer |
US9697856B2 (en) * | 2013-12-06 | 2017-07-04 | Seagate Techology LLC | Methods of forming near field transducers and near field transducers formed thereby |
US9570098B2 (en) | 2013-12-06 | 2017-02-14 | Seagate Technology Llc | Methods of forming near field transducers and near field transducers formed thereby |
US8988827B1 (en) | 2014-01-17 | 2015-03-24 | HGST Netherlands B.V. | Surface diffusion inhibitor for HAMR NFT |
US9099112B1 (en) | 2014-01-31 | 2015-08-04 | HGST Netherlands B.V. | Near field transducer having notch diffusion barrier |
US9218835B1 (en) * | 2014-09-02 | 2015-12-22 | Headway Technologies, Inc. | Thermally-assisted magnetic recording head including a heat sink |
US9147427B1 (en) | 2014-10-31 | 2015-09-29 | Seagate Technology Llc | Near-field transducer with multiple heat sinks |
US9822444B2 (en) | 2014-11-11 | 2017-11-21 | Seagate Technology Llc | Near-field transducer having secondary atom higher concentration at bottom of the peg |
WO2016077197A1 (en) | 2014-11-12 | 2016-05-19 | Seagate Technology Llc | Devices including a near field transducer (nft) with nanoparticles |
WO2016191414A1 (en) * | 2015-05-27 | 2016-12-01 | Seagate Technology Llc | Thermally robust near-field transducer peg |
US11328747B1 (en) | 2020-12-08 | 2022-05-10 | Western Digital Technologies, Inc. | Heat-assisted magnetic recording (HAMR) head with heat sink material adjacent the waveguide |
US11250879B1 (en) | 2021-02-17 | 2022-02-15 | Western Digital Technologies, Inc. | Heat-assisted magnetic recording (HAMR) head with optically reflective shield material adjacent the waveguide |
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WO1995009418A1 (fr) | 1993-09-27 | 1995-04-06 | Seiko Epson Corporation | Tete optique |
JP2990038B2 (ja) | 1995-03-30 | 1999-12-13 | 日本電気株式会社 | 光ヘッド |
JP2003051144A (ja) | 2001-08-03 | 2003-02-21 | Fujitsu Ltd | 磁気ヘッド |
US7088550B2 (en) * | 2003-07-30 | 2006-08-08 | Hitachi Global Storage Technologies Netherlands, B.V. | Magnetic hard disk recording head with self-compensating thermal expansion |
JP4226976B2 (ja) * | 2003-08-29 | 2009-02-18 | Tdk株式会社 | 薄膜磁気ヘッドおよび磁気記録装置 |
US7626894B2 (en) | 2005-04-13 | 2009-12-01 | Seagate Technology Llc | Heat assisted magnetic recording light delivery with fixed laser and rotating mirror |
US8339905B2 (en) | 2005-04-13 | 2012-12-25 | Seagate Technology Llc | Alignment features for heat assisted magnetic recording transducers |
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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 |
US8451555B2 (en) * | 2009-02-24 | 2013-05-28 | Seagate Technology Llc | Recording head for heat assisted magnetic recording |
US8194511B2 (en) * | 2010-03-19 | 2012-06-05 | Headway Technologies, Inc. | Heat-assisted magnetic recording head with near-field light generating element |
US8391108B2 (en) * | 2010-08-12 | 2013-03-05 | Seagate Technology Llc | Hybrid near-field transducer for heat assisted magnetic recording |
US8514672B2 (en) * | 2010-08-24 | 2013-08-20 | HGST Netherlands B.V. | Near-field transducer with thermal sensor and system for clocking write data in a patterned-media magnetic recording disk drive |
US8339739B2 (en) | 2010-08-31 | 2012-12-25 | Hitachi Global Storage Technologies Netherlands B.V. | Thermally assisted recording head with near field transducer having integral heatsink |
-
2010
- 2010-12-22 US US12/976,559 patent/US9431036B2/en active Active
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2011
- 2011-12-20 JP JP2011278148A patent/JP5759884B2/ja not_active Expired - Fee Related
- 2011-12-21 CN CN201110463219.1A patent/CN102592608B/zh active Active
- 2011-12-22 KR KR1020110140363A patent/KR101349904B1/ko active IP Right Grant
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Publication number | Publication date |
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CN102592608A (zh) | 2012-07-18 |
JP2012133873A (ja) | 2012-07-12 |
US20120163139A1 (en) | 2012-06-28 |
US9431036B2 (en) | 2016-08-30 |
CN102592608B (zh) | 2016-01-20 |
KR101349904B1 (ko) | 2014-01-13 |
KR20120071366A (ko) | 2012-07-02 |
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