DE19982238T1 - Magnetsensor, Magnetkopf, Magnetcodierer und Festplattenvorrichtung - Google Patents

Magnetsensor, Magnetkopf, Magnetcodierer und Festplattenvorrichtung

Info

Publication number: DE19982238T1
Authority: DE; Germany
Prior art keywords: magnetic; hard disk; disk device; encoder; sensor
Prior art date: 1998-10-12
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 Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.): Withdrawn

Application number

DE19982238T

Other languages

English (en)

Inventor

Masashige Sato

Hideyuki Kikuchi

Kazuo Kobayashi

Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)

Fujitsu Ltd

Original Assignee

Fujitsu Ltd

Priority date (The priority date 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 date listed.)

1998-10-12

Filing date

1999-10-08

Publication date

2001-02-15

1998-10-12 Priority claimed from JP28978198A external-priority patent/JP4104748B2/ja

1998-10-29 Priority claimed from JP30898998A external-priority patent/JP3260708B2/ja

1999-10-08 Application filed by Fujitsu Ltd filed Critical Fujitsu Ltd

2001-02-15 Publication of DE19982238T1 publication Critical patent/DE19982238T1/de

Status Withdrawn legal-status Critical Current

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
- G11B5/33—Structure or manufacture of flux-sensitive heads, i.e. for reproduction only; Combination of such heads with means for recording or erasing only
- G11B5/39—Structure or manufacture of flux-sensitive heads, i.e. for reproduction only; Combination of such heads with means for recording or erasing only using magneto-resistive devices or effects
- G11B5/3903—Structure or manufacture of flux-sensitive heads, i.e. for reproduction only; Combination of such heads with means for recording or erasing only using magneto-resistive devices or effects using magnetic thin film layers or their effects, the films being part of integrated structures
- G11B5/3906—Details related to the use of magnetic thin film layers or to their effects
- G11B5/3909—Arrangements using a magnetic tunnel junction
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R33/00—Arrangements or instruments for measuring magnetic variables
- G01R33/02—Measuring direction or magnitude of magnetic fields or magnetic flux
- G01R33/06—Measuring direction or magnitude of magnetic fields or magnetic flux using galvano-magnetic devices
- B—PERFORMING OPERATIONS; TRANSPORTING
- B82—NANOTECHNOLOGY
- B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
- B82Y10/00—Nanotechnology for information processing, storage or transmission, e.g. quantum computing or single electron logic
- B—PERFORMING OPERATIONS; TRANSPORTING
- B82—NANOTECHNOLOGY
- B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
- B82Y25/00—Nanomagnetism, e.g. magnetoimpedance, anisotropic magnetoresistance, giant magnetoresistance or tunneling magnetoresistance
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R33/00—Arrangements or instruments for measuring magnetic variables
- G01R33/02—Measuring direction or magnitude of magnetic fields or magnetic flux
- G01R33/06—Measuring direction or magnitude of magnetic fields or magnetic flux using galvano-magnetic devices
- G01R33/09—Magnetoresistive devices
- G01R33/098—Magnetoresistive devices comprising tunnel junctions, e.g. tunnel magnetoresistance sensors
- 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
- G11B5/012—Recording on, or reproducing or erasing from, magnetic disks
- 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
- G11B5/33—Structure or manufacture of flux-sensitive heads, i.e. for reproduction only; Combination of such heads with means for recording or erasing only
- G11B5/39—Structure or manufacture of flux-sensitive heads, i.e. for reproduction only; Combination of such heads with means for recording or erasing only using magneto-resistive devices or effects
- G11B5/3903—Structure or manufacture of flux-sensitive heads, i.e. for reproduction only; Combination of such heads with means for recording or erasing only using magneto-resistive devices or effects using magnetic thin film layers or their effects, the films being part of integrated structures
- 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
- G11B5/33—Structure or manufacture of flux-sensitive heads, i.e. for reproduction only; Combination of such heads with means for recording or erasing only
- G11B5/39—Structure or manufacture of flux-sensitive heads, i.e. for reproduction only; Combination of such heads with means for recording or erasing only using magneto-resistive devices or effects
- G11B2005/3996—Structure or manufacture of flux-sensitive heads, i.e. for reproduction only; Combination of such heads with means for recording or erasing only using magneto-resistive devices or effects large or giant magnetoresistive effects [GMR], e.g. as generated in spin-valve [SV] devices
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B2220/00—Record carriers by type
- G11B2220/20—Disc-shaped record carriers
- G11B2220/25—Disc-shaped record carriers characterised in that the disc is based on a specific recording technology
- G11B2220/2508—Magnetic discs
- G11B2220/2516—Hard disks

Landscapes

Engineering & Computer Science (AREA)
Physics & Mathematics (AREA)
Chemical & Material Sciences (AREA)
Nanotechnology (AREA)
Crystallography & Structural Chemistry (AREA)
Condensed Matter Physics & Semiconductors (AREA)
General Physics & Mathematics (AREA)
Manufacturing & Machinery (AREA)
Mathematical Physics (AREA)
Theoretical Computer Science (AREA)
Hall/Mr Elements (AREA)
Magnetic Heads (AREA)

DE19982238T 1998-10-12 1999-10-08 Magnetsensor, Magnetkopf, Magnetcodierer und Festplattenvorrichtung Withdrawn DE19982238T1 (de)

Applications Claiming Priority (3)

Application Number	Priority Date	Filing Date	Title
JP28978198A JP4104748B2 (ja)	1998-10-12	1998-10-12	磁気センサ、磁気ヘッド及び磁気エンコーダ
JP30898998A JP3260708B2 (ja)	1998-10-29	1998-10-29	磁気ヘッド及びハードディスク装置
PCT/JP1999/005568 WO2000022612A1 (fr)	1998-10-12	1999-10-08	Capteur magnetique, tete magnetique, codeur magnetique et entrainement de disque dur

Publications (1)

Publication Number	Publication Date
DE19982238T1 true DE19982238T1 (de)	2001-02-15

Family

ID=26557746

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
DE19982238T Withdrawn DE19982238T1 (de)	1998-10-12	1999-10-08	Magnetsensor, Magnetkopf, Magnetcodierer und Festplattenvorrichtung

Country Status (5)

Country	Link
US (1)	US7199985B1 (de)
KR (1)	KR100631355B1 (de)
CN (2)	CN1160707C (de)
DE (1)	DE19982238T1 (de)
WO (1)	WO2000022612A1 (de)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US7901802B2 (en)	2006-03-15	2011-03-08	Seagate Technology Llc	Magnetic recording medium for perpendicular magnetic recording
JP4232808B2 (ja) *	2006-09-19	2009-03-04	日立金属株式会社	磁気エンコーダ装置
FR2929041B1 (fr) *	2008-03-18	2012-11-30	Crocus Technology	Element magnetique a ecriture assistee thermiquement
US9972352B2 (en) *	2009-08-19	2018-05-15	Seagate Technology Llc	Antiferromagnetic coupling layers
US20110101964A1 (en) *	2009-11-05	2011-05-05	Udo Ausserlechner	Magnetic Encoder Element for Position Measurement
US9196825B2 (en)	2013-09-03	2015-11-24	Taiwan Semiconductor Manufacturing Co., Ltd.	Reversed stack MTJ
JP5721804B2 (ja)	2013-10-29	2015-05-20	三菱電機株式会社	磁気検出装置、およびこれを搭載した車両用回転検出装置
CN103972299B (zh) *	2014-04-28	2016-03-30	京东方科技集团股份有限公司	一种薄膜晶体管及其制作方法、显示基板、显示装置
CA3134222C (en)	2019-06-28	2024-01-16	The Procter & Gamble Company	Dissolvable solid fibrous articles containing anionic surfactants

Family Cites Families (21)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
JPH0680521B2 (ja)	1983-04-20	1994-10-12	日本電気株式会社	垂直磁気ヘツド
JPS63229609A (ja)	1987-03-19	1988-09-26	Matsushita Electric Ind Co Ltd	両面型磁気ヘツド
JP3037380B2 (ja)	1990-08-30	2000-04-24	日立金属株式会社	磁気式エンコーダ
US5206590A (en)	1990-12-11	1993-04-27	International Business Machines Corporation	Magnetoresistive sensor based on the spin valve effect
JPH05250631A (ja)	1992-03-06	1993-09-28	Nec Corp	磁気ヘッド
JPH0773419A (ja) *	1993-09-02	1995-03-17	Matsushita Electric Ind Co Ltd	磁気抵抗効果型薄膜磁気ヘッド
JPH0821166A (ja)	1994-07-11	1996-01-23	Takou:Kk	明かり採り
JP2870437B2 (ja) *	1994-12-29	1999-03-17	ヤマハ株式会社	Ｍｒヘッドおよびその製造方法
JPH09106514A (ja)	1995-10-06	1997-04-22	Fujitsu Ltd	強磁性トンネル素子及びその製造方法
JPH09251618A (ja)	1996-03-19	1997-09-22	Fujitsu Ltd	磁気センサ
JPH09288807A (ja) *	1996-02-22	1997-11-04	Matsushita Electric Ind Co Ltd	薄膜磁気ヘッド
US6084752A (en) *	1996-02-22	2000-07-04	Matsushita Electric Industrial Co., Ltd.	Thin film magnetic head
JPH09245318A (ja) *	1996-03-08	1997-09-19	Hitachi Ltd	磁気抵抗効果型ヘッド
US5650958A (en)	1996-03-18	1997-07-22	International Business Machines Corporation	Magnetic tunnel junctions with controlled magnetic response
JPH09282616A (ja)	1996-04-18	1997-10-31	Fujitsu Ltd	磁気ヘッド及び磁気記録装置
JP3047824B2 (ja) *	1996-08-28	2000-06-05	ヤマハ株式会社	磁気抵抗効果型薄膜変換素子およびその製造方法
EP0831541A3 (de) *	1996-09-19	1999-05-06	TDK Corporation	Ferromagnetischer Tunnelübergang, magnetoresistives Element und Magnetkopf
US5729410A (en) *	1996-11-27	1998-03-17	International Business Machines Corporation	Magnetic tunnel junction device with longitudinal biasing
JP3528511B2 (ja) *	1997-04-14	2004-05-17	松下電器産業株式会社	薄膜磁気ヘッド
US5898547A (en) *	1997-10-24	1999-04-27	International Business Machines Corporation	Magnetic tunnel junction magnetoresistive read head with sensing layer as flux guide
US6108177A (en) *	1998-11-19	2000-08-22	International Business Machines Corporation	Tunnel junction structure with FeX ferromagnetic layers

1999
- 1999-10-08 DE DE19982238T patent/DE19982238T1/de not_active Withdrawn
- 1999-10-08 KR KR1020007006051A patent/KR100631355B1/ko not_active IP Right Cessation
- 1999-10-08 CN CNB998021741A patent/CN1160707C/zh not_active Expired - Fee Related
- 1999-10-08 CN CNB2004100016519A patent/CN1259650C/zh not_active Expired - Fee Related
- 1999-10-08 WO PCT/JP1999/005568 patent/WO2000022612A1/ja active IP Right Grant
2000
- 2000-06-12 US US09/581,468 patent/US7199985B1/en not_active Expired - Fee Related

Also Published As

Publication number	Publication date
CN1160707C (zh)	2004-08-04
CN1259650C (zh)	2006-06-14
US7199985B1 (en)	2007-04-03
WO2000022612A1 (fr)	2000-04-20
KR20010032759A (ko)	2001-04-25
CN1288558A (zh)	2001-03-21
CN1523574A (zh)	2004-08-25
KR100631355B1 (ko)	2006-10-09

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DE69941585D1 (de)	2009-12-03	Nahfeld Abtastkopf und Herstellungsverfahren dafür
DE60027130D1 (de)	2006-05-18	Aufzeichnungsvorrichtung, halbleitervorrichtung und aufzeichnungskopf
DE60124035D1 (de)	2006-12-07	Aufzeichnungsgerät und Aufzeichnungsverfahren
DE69917994D1 (de)	2004-07-22	Aufzeichnungsmedium und Aufzeichnungsgerät
DE69936801D1 (de)	2007-09-20	Aufzeichnungsvorrichtung
DE60132042D1 (de)	2008-02-07	Aufzeichnungsgerät und -verfahren
DE69904168D1 (de)	2003-01-09	Magnetfeldfühler
DE60039553D1 (de)	2008-09-04	Aufzeichnungskopf und Aufzeichnungsgerät
DE19980892T1 (de)	2001-05-17	Aufzeichnungs-Wiedergabegerät
DE60117488D1 (de)	2006-04-27	Informationsverarbeitung und Aufzeichnungsmedium
DE69926283D1 (de)	2005-09-01	Wiedergabegerät, Aufzeichnungsgerät und Aufzeichnungs-/Wiedergabevorrichtung
DE69918439D1 (de)	2004-08-05	Magnetkopfwicklung, magnetkopf und magneto-optisches aufzeichnungsgerät
DE60045891D1 (de)	2011-06-09	Magnetoresistiver Sensor, magnetoresistiver Kopf und Magnetaufzeichnungs/wiedergabegerät
DE60124325D1 (de)	2006-12-14	Aufzeichnungsgerät und Aufzeichungsverfahren
DE60015899D1 (de)	2004-12-23	Aufnahmevorrichtung und Aufnahmemedium
DE69929744D1 (de)	2006-04-20	Informationsaufzeichnungsgerät
DE69921232D1 (de)	2004-11-25	Informationsaufzeichnungsgerät
DE60142596D1 (de)	2010-09-02	uerungsverfahren und Aufzeichnungsmedium
DE19982238T1 (de)	2001-02-15	Magnetsensor, Magnetkopf, Magnetcodierer und Festplattenvorrichtung
DE60204999D1 (de)	2005-08-18	Magnetischer Sensor, Magnetkopf und magnetisches Aufzeichnungsgerät
DE59811023D1 (de)	2004-04-22	Magnetfeldsensor
DE19983774T1 (de)	2001-11-22	Magnetkraftdrehvorrichtung
DE69804080D1 (de)	2002-04-11	Kopfwagen- und Betätigungselement- Anordnung
DE69914673D1 (de)	2004-03-18	Magnetkopfträger und Betätigungsvorrichtung
DE69915193D1 (de)	2004-04-08	Magnetaufzeichnungsvorrichtung

Legal Events

Date	Code	Title	Description
2001-02-15	OP8	Request for examination as to paragraph 44 patent law
2006-07-13	8172	Supplementary division/partition in:	Ref document number: 19964482 Country of ref document: DE Kind code of ref document: P
2006-07-13	Q171	Divided out to:	Ref document number: 19964482 Country of ref document: DE Kind code of ref document: P
2010-08-19	8139	Disposal/non-payment of the annual fee