WO2009044663A1 - 近接場光ヘッド及び情報記録再生装置 - Google Patents
近接場光ヘッド及び情報記録再生装置 Download PDFInfo
- Publication number
- WO2009044663A1 WO2009044663A1 PCT/JP2008/067347 JP2008067347W WO2009044663A1 WO 2009044663 A1 WO2009044663 A1 WO 2009044663A1 JP 2008067347 W JP2008067347 W JP 2008067347W WO 2009044663 A1 WO2009044663 A1 WO 2009044663A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- core
- light beam
- magnetic pole
- optical head
- main magnetic
- Prior art date
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
- G11B5/127—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
- G11B5/02—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
- G11B5/48—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)
Abstract
近接場光ヘッドは、スライダ20と、主磁極32及び補助磁極30を有し、スライダの先端面側に固定された記録素子21とを備える。近接場光ヘッドは、光束伝播素子22を備える。光束伝播素子22は、主磁極に隣接して固定されており、平坦面40aと曲面40bとで半円柱状に形成され、一端側から導入された光束Lを他端側に向けて伝播させるコア40と、該コアを内部に閉じ込めるクラッド41とを備える。近接場光ヘッドは、コアのうち他端側近傍における曲面上に形成され、光束から近接場光Rを生成すると共に該近接場光を曲面との界面に局在化させる金属膜23と、平坦面に対して略垂直な直線方向に偏光方向が調整された光束を一端側からコア内に導入させる光束導入手段4とを備える。主磁極32は、主磁極32の先端側がコア側に屈曲しており、該コアに埋め込まれた状態で他端側に露出している。
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US12/733,983 US8351306B2 (en) | 2007-10-03 | 2008-09-25 | Near field optical head and information recording and reproducing device |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2007259796A JP5505947B2 (ja) | 2007-10-03 | 2007-10-03 | 近接場光ヘッド及び情報記録再生装置 |
JP2007-259796 | 2007-10-03 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2009044663A1 true WO2009044663A1 (ja) | 2009-04-09 |
Family
ID=40526092
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2008/067347 WO2009044663A1 (ja) | 2007-10-03 | 2008-09-25 | 近接場光ヘッド及び情報記録再生装置 |
Country Status (3)
Country | Link |
---|---|
US (1) | US8351306B2 (ja) |
JP (1) | JP5505947B2 (ja) |
WO (1) | WO2009044663A1 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
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 |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP5592155B2 (ja) * | 2009-07-03 | 2014-09-17 | セイコーインスツル株式会社 | ヘッドジンバルアセンブリ及び情報記録再生装置 |
US8406094B2 (en) | 2009-07-06 | 2013-03-26 | Hitachi, Ltd. | Heat-assisted recording head and heat-assisted recording device |
US8649245B2 (en) * | 2010-03-29 | 2014-02-11 | Seagate Technology Llc | Direct waveguide light delivery to NFT for heat assisted magnetic recording |
US8619512B1 (en) * | 2012-06-22 | 2013-12-31 | Western Digital (Fremont), Llc | Stress buffer for near-field transducer in energy assisted magnetic recording and methods for fabricating the same |
US8614932B1 (en) * | 2012-09-17 | 2013-12-24 | Headway Technologies, Inc. | Thermally-assisted magnetic recording head having a plasmon generator |
US9251819B2 (en) * | 2013-11-12 | 2016-02-02 | Seagate Technology Llc | Mode converter coupling energy at a high-order transverse electric mode to a plasmonic transducer |
US9322997B2 (en) | 2014-03-25 | 2016-04-26 | Seagate Technology Llc | Branched waveguide configuration |
US20170372734A1 (en) * | 2016-06-24 | 2017-12-28 | Symphonious Technologies, LLC | Magnetic recording head utilizing focused optical-thermal energy and a system and method of use |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0448406A (ja) * | 1990-06-13 | 1992-02-18 | Sharp Corp | 光磁気記録再生装置 |
JP2002298302A (ja) * | 2001-03-29 | 2002-10-11 | Toshiba Corp | 光アシスト磁気記録ヘッド及び光アシスト磁気記録装置 |
JP2003006803A (ja) * | 2001-06-22 | 2003-01-10 | Fuji Xerox Co Ltd | 光磁気ヘッドおよび光磁気ディスク装置 |
JP2005116155A (ja) * | 2003-10-10 | 2005-04-28 | Seagate Technology Llc | 熱支援された磁気および光データ記憶のための近視野光トランスジューサ |
JP2006139873A (ja) * | 2004-11-12 | 2006-06-01 | Hitachi Global Storage Technologies Netherlands Bv | 垂直磁気ヘッドおよび垂直磁気記録装置 |
JP2007164935A (ja) * | 2005-12-16 | 2007-06-28 | Tdk Corp | 近接場光発生層を備えた薄膜磁気ヘッド |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7911882B2 (en) * | 2005-12-16 | 2011-03-22 | Tdk Corporation | Thin-film magnetic head with near-field-light-generating layer |
JP5804487B2 (ja) * | 2010-11-08 | 2015-11-04 | セイコーインスツル株式会社 | 記録ヘッド、記録ヘッドの製造方法、及び情報記録再生装置 |
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2007
- 2007-10-03 JP JP2007259796A patent/JP5505947B2/ja not_active Expired - Fee Related
-
2008
- 2008-09-25 WO PCT/JP2008/067347 patent/WO2009044663A1/ja active Application Filing
- 2008-09-25 US US12/733,983 patent/US8351306B2/en not_active Expired - Fee Related
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0448406A (ja) * | 1990-06-13 | 1992-02-18 | Sharp Corp | 光磁気記録再生装置 |
JP2002298302A (ja) * | 2001-03-29 | 2002-10-11 | Toshiba Corp | 光アシスト磁気記録ヘッド及び光アシスト磁気記録装置 |
JP2003006803A (ja) * | 2001-06-22 | 2003-01-10 | Fuji Xerox Co Ltd | 光磁気ヘッドおよび光磁気ディスク装置 |
JP2005116155A (ja) * | 2003-10-10 | 2005-04-28 | Seagate Technology Llc | 熱支援された磁気および光データ記憶のための近視野光トランスジューサ |
JP2006139873A (ja) * | 2004-11-12 | 2006-06-01 | Hitachi Global Storage Technologies Netherlands Bv | 垂直磁気ヘッドおよび垂直磁気記録装置 |
JP2007164935A (ja) * | 2005-12-16 | 2007-06-28 | Tdk Corp | 近接場光発生層を備えた薄膜磁気ヘッド |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
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 |
Also Published As
Publication number | Publication date |
---|---|
US8351306B2 (en) | 2013-01-08 |
JP5505947B2 (ja) | 2014-05-28 |
JP2009087508A (ja) | 2009-04-23 |
US20100284252A1 (en) | 2010-11-11 |
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