CN105321531A - 用于能量辅助磁记录的干涉近场换能器 - Google Patents
用于能量辅助磁记录的干涉近场换能器 Download PDFInfo
- Publication number
- CN105321531A CN105321531A CN201510315652.9A CN201510315652A CN105321531A CN 105321531 A CN105321531 A CN 105321531A CN 201510315652 A CN201510315652 A CN 201510315652A CN 105321531 A CN105321531 A CN 105321531A
- Authority
- CN
- China
- Prior art keywords
- pspp
- waveguide core
- equipment according
- energy
- near field
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
Classifications
-
- 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
- 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
-
- 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
- G11B2005/0021—Thermally assisted recording using an auxiliary energy source for heating the recording layer locally to assist the magnetization reversal
Abstract
Description
Claims (13)
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US201462010038P | 2014-06-10 | 2014-06-10 | |
US62/010,038 | 2014-06-10 | ||
US14/324,466 US8958272B1 (en) | 2014-06-10 | 2014-07-07 | Interfering near field transducer for energy assisted magnetic recording |
US14/324,466 | 2014-07-07 |
Publications (2)
Publication Number | Publication Date |
---|---|
CN105321531A true CN105321531A (zh) | 2016-02-10 |
CN105321531B CN105321531B (zh) | 2018-09-18 |
Family
ID=52463655
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201510315652.9A Active CN105321531B (zh) | 2014-06-10 | 2015-06-10 | 用于能量辅助磁记录的干涉近场换能器 |
Country Status (3)
Country | Link |
---|---|
US (2) | US8958272B1 (zh) |
CN (1) | CN105321531B (zh) |
HK (1) | HK1219559A1 (zh) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8958272B1 (en) * | 2014-06-10 | 2015-02-17 | Western Digital (Fremont), Llc | Interfering near field transducer for energy assisted magnetic recording |
US9263071B1 (en) | 2015-03-31 | 2016-02-16 | Western Digital (Fremont), Llc | Flat NFT for heat assisted magnetic recording |
CN106395732B (zh) * | 2016-10-20 | 2017-10-13 | 东南大学 | 一种实现光自旋霍尔效应的金属微纳结构 |
KR102246017B1 (ko) * | 2017-04-11 | 2021-04-30 | 한국전자통신연구원 | 편광 조절기 |
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-
2014
- 2014-07-07 US US14/324,466 patent/US8958272B1/en active Active
-
2015
- 2015-01-30 US US14/609,580 patent/US9311952B2/en active Active
- 2015-06-10 CN CN201510315652.9A patent/CN105321531B/zh active Active
-
2016
- 2016-06-28 HK HK16107539.5A patent/HK1219559A1/zh unknown
Also Published As
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US20150356990A1 (en) | 2015-12-10 |
US9311952B2 (en) | 2016-04-12 |
CN105321531B (zh) | 2018-09-18 |
HK1219559A1 (zh) | 2017-04-07 |
US8958272B1 (en) | 2015-02-17 |
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