CN101814292A - 以磁进动来快速切换垂直写入极磁化的垂直磁记录系统 - Google Patents
以磁进动来快速切换垂直写入极磁化的垂直磁记录系统 Download PDFInfo
- Publication number
- CN101814292A CN101814292A CN200910262172A CN200910262172A CN101814292A CN 101814292 A CN101814292 A CN 101814292A CN 200910262172 A CN200910262172 A CN 200910262172A CN 200910262172 A CN200910262172 A CN 200910262172A CN 101814292 A CN101814292 A CN 101814292A
- Authority
- CN
- China
- Prior art keywords
- coil
- write
- terminal
- lead
- driver
- 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.)
- Granted
Links
- 230000005415 magnetization Effects 0.000 title description 9
- 230000004907 flux Effects 0.000 claims abstract description 34
- 238000004804 winding Methods 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 4
- 239000000758 substrate Substances 0.000 claims description 4
- 239000003990 capacitor Substances 0.000 claims description 3
- 230000015572 biosynthetic process Effects 0.000 claims 1
- 238000006073 displacement reaction Methods 0.000 abstract description 4
- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 230000005389 magnetism Effects 0.000 description 4
- 230000003321 amplification Effects 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- 230000003111 delayed effect Effects 0.000 description 2
- 239000011810 insulating material Substances 0.000 description 2
- 238000003199 nucleic acid amplification method Methods 0.000 description 2
- 238000009987 spinning Methods 0.000 description 2
- 239000000725 suspension Substances 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001259 photo etching Methods 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Images
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
- G11B5/312—Details for reducing flux leakage between the electrical coil layers and the magnetic cores or poles or between the magnetic cores or poles
- G11B5/3123—Details for reducing flux leakage between the electrical coil layers and the magnetic cores or poles or between the magnetic cores or poles by using special coil configurations or conductors
-
- 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
- G11B5/127—Structure or manufacture of heads, e.g. inductive
- G11B5/1278—Structure or manufacture of heads, e.g. inductive specially adapted for magnetisations perpendicular to the surface of the record carrier
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Magnetic Heads (AREA)
- Digital Magnetic Recording (AREA)
- Recording Or Reproducing By Magnetic Means (AREA)
Abstract
Description
Claims (19)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US12/391,242 US8139319B2 (en) | 2009-02-23 | 2009-02-23 | Perpendicular magnetic recording system with magnetic precession for fast switching of perpendicular write pole magnetization |
US12/391,242 | 2009-02-23 |
Publications (2)
Publication Number | Publication Date |
---|---|
CN101814292A true CN101814292A (zh) | 2010-08-25 |
CN101814292B CN101814292B (zh) | 2015-02-18 |
Family
ID=42621530
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN200910262172.5A Expired - Fee Related CN101814292B (zh) | 2009-02-23 | 2009-12-25 | 以磁进动来快速切换垂直写入极磁化的垂直磁记录系统 |
Country Status (3)
Country | Link |
---|---|
US (1) | US8139319B2 (zh) |
JP (1) | JP2010198721A (zh) |
CN (1) | CN101814292B (zh) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2012150863A (ja) * | 2011-01-18 | 2012-08-09 | Toshiba Corp | 記録ヘッド、およびこれを備えたディスク装置 |
US9142226B2 (en) * | 2012-06-29 | 2015-09-22 | Seagate Technology Llc | Thin film with tuned grain size |
US9495979B1 (en) * | 2015-09-30 | 2016-11-15 | Seagate Technology Llc | Magnetic recording head front shield formation |
US9672846B1 (en) * | 2016-06-21 | 2017-06-06 | Western Digital Technologies, Inc. | STO bias control for MAMR head reliability |
Family Cites Families (30)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5960722A (ja) | 1982-09-30 | 1984-04-06 | Fujitsu Ltd | 薄膜磁気ヘツド |
JP2889411B2 (ja) * | 1991-10-31 | 1999-05-10 | キヤノン株式会社 | 磁気ヘッド駆動装置 |
JP3211999B2 (ja) * | 1992-06-26 | 2001-09-25 | キヤノン株式会社 | 光磁気記録装置 |
US5869988A (en) * | 1997-03-25 | 1999-02-09 | Marvell Technology Group, Ltd. | High speed write driver for inductive heads |
US6219193B1 (en) * | 1998-02-20 | 2001-04-17 | Seagate Technology Llc | Superpositioning microactuator control and write current signals in a disc drive |
US6349009B1 (en) * | 1998-06-05 | 2002-02-19 | Seagate Technology Llc | Head assembly with integrated write current shaping circuit |
US6201653B1 (en) * | 1998-06-12 | 2001-03-13 | International Business Machines Corporation | By-pass write drivers for high-performance data recording |
US6816339B1 (en) * | 2000-01-10 | 2004-11-09 | Seagate Technology Llc | Perpendicular magnetic recording head with longitudinal magnetic field generator to facilitate magnetization switching |
JP2001202601A (ja) | 2000-01-20 | 2001-07-27 | Hitachi Ltd | 記録装置 |
US6570739B2 (en) * | 2000-02-10 | 2003-05-27 | International Business Machines Corporation | Magnetic head having write head element with high aspect ratio coil |
US6515826B1 (en) * | 2000-08-14 | 2003-02-04 | International Business Machines Corporation | Magnetic head induction coil fabrication method utilizing aspect ratio dependent etching |
JP4043438B2 (ja) * | 2001-07-24 | 2008-02-06 | シーゲイト テクノロジー エルエルシー | 高度異方性メディア用の書き込みヘッド |
JP2003036503A (ja) * | 2001-07-24 | 2003-02-07 | Hitachi Ltd | 垂直記録用磁気ヘッド及びそれを搭載した磁気ディスク装置 |
JP2005526339A (ja) * | 2001-08-21 | 2005-09-02 | シーゲイト テクノロジー エルエルシー | 空間ポンプド・スピン波モード・ライターを含む磁気記録ヘッド |
JP3799322B2 (ja) * | 2002-11-15 | 2006-07-19 | 株式会社日立グローバルストレージテクノロジーズ | 磁気ディスク装置 |
JP2004227709A (ja) | 2003-01-24 | 2004-08-12 | Nippon Hoso Kyokai <Nhk> | 磁気記録ヘッドおよびそれを用いた磁気記録装置 |
US7070716B2 (en) * | 2003-07-28 | 2006-07-04 | Hitachi Global Storage Technologies Netherlands B.V. | Method for providing transverse magnetic bias proximate to a pole tip to speed up the switching time of the pole-tip during the writing operation |
US7072142B2 (en) * | 2003-07-28 | 2006-07-04 | Hitachi Global Storage Technologies Netherlands B.V. | Apparatus for providing transverse magnetic bias proximate to a pole tip to speed up the switching time of the pole-tip during the writing operation |
US7237320B2 (en) * | 2003-12-08 | 2007-07-03 | Hitachi Global Storage Technologies Netherlands B.V. | Methods of orienting an easy axis of a high-aspect ratio write head for improved writing efficiency |
US7256955B2 (en) * | 2004-03-17 | 2007-08-14 | Seagate Technology Llc | High frequency assisted writing |
US7591427B2 (en) * | 2004-09-10 | 2009-09-22 | Josef Osterweil | Method and system for a static magnetic read/write head |
US7397633B2 (en) * | 2005-03-01 | 2008-07-08 | Seagate Technology, Llc | Writer structure with assisted bias |
JP2007299460A (ja) * | 2006-04-28 | 2007-11-15 | Tdk Corp | 磁気ヘッド装置及び磁気記録再生装置 |
US20080112080A1 (en) * | 2006-11-13 | 2008-05-15 | Hitachi Global Storage Technologies | Magnetic write head employing multiple magnetomotive force (MMF) sources |
US7889458B2 (en) * | 2006-11-13 | 2011-02-15 | Hitachi Global Storage Technologies Netherlands B.V. | Write head with self-cross biased pole for high speed magnetic recording |
US7619843B2 (en) * | 2006-11-14 | 2009-11-17 | Hitachi Global Storage Technologies Netherlands, B.V. | Write through drivers for disk drive systems |
US20080112087A1 (en) * | 2006-11-14 | 2008-05-15 | Seagate Technology Llc | WAMR writer with an integrated spin momentum transfer driven oscillator for generating a microwave assist field |
US20080117545A1 (en) * | 2006-11-20 | 2008-05-22 | Seagate Technology Llc | Data storage system with field assist source |
US7724469B2 (en) * | 2006-12-06 | 2010-05-25 | Seagate Technology Llc | High frequency field assisted write device |
JP2008159105A (ja) * | 2006-12-21 | 2008-07-10 | Tdk Corp | 強磁性共鳴を用いる磁気記録方法及び該方法に用いる薄膜磁気ヘッド |
-
2009
- 2009-02-23 US US12/391,242 patent/US8139319B2/en not_active Expired - Fee Related
- 2009-12-25 CN CN200910262172.5A patent/CN101814292B/zh not_active Expired - Fee Related
-
2010
- 2010-02-22 JP JP2010036425A patent/JP2010198721A/ja active Pending
Also Published As
Publication number | Publication date |
---|---|
JP2010198721A (ja) | 2010-09-09 |
CN101814292B (zh) | 2015-02-18 |
US8139319B2 (en) | 2012-03-20 |
US20100214693A1 (en) | 2010-08-26 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
C06 | Publication | ||
PB01 | Publication | ||
C10 | Entry into substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
C53 | Correction of patent for invention or patent application | ||
CB02 | Change of applicant information |
Address after: Amsterdam Applicant after: Hitachi Global Storage Technologies Netherlands B. V. Address before: Amsterdam Applicant before: Hitachi Global Storage Tech |
|
COR | Change of bibliographic data |
Free format text: CORRECT: APPLICANT; FROM: HITACHI GLOBAL STORAGE TECH TO: HGST NETHERLANDS BV |
|
C14 | Grant of patent or utility model | ||
GR01 | Patent grant | ||
TR01 | Transfer of patent right | ||
TR01 | Transfer of patent right |
Effective date of registration: 20190131 Address after: American California Patentee after: Western Digital Technologies, Inc. Address before: Amsterdam Patentee before: Hitachi Global Storage Technologies Netherlands B. V. |
|
CF01 | Termination of patent right due to non-payment of annual fee | ||
CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150218 Termination date: 20201225 |