KR100786929B1 - 자기 헤드 및 자기 기록 재생 장치 - Google Patents

자기 헤드 및 자기 기록 재생 장치 Download PDF

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Publication number
KR100786929B1
KR100786929B1 KR1020010014019A KR20010014019A KR100786929B1 KR 100786929 B1 KR100786929 B1 KR 100786929B1 KR 1020010014019 A KR1020010014019 A KR 1020010014019A KR 20010014019 A KR20010014019 A KR 20010014019A KR 100786929 B1 KR100786929 B1 KR 100786929B1
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KR
South Korea
Prior art keywords
magnetic
flux guide
flux
head
magnetic recording
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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.)
Expired - Fee Related
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KR1020010014019A
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English (en)
Korean (ko)
Other versions
KR20020010447A (ko
Inventor
이또겐찌
소에야스사무
Original Assignee
가부시끼가이샤 히다찌 글로벌 스토리지 테크놀로지 니뽄
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Publication of KR20020010447A publication Critical patent/KR20020010447A/ko
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Publication of KR100786929B1 publication Critical patent/KR100786929B1/ko
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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
    • G11B5/33—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
    • 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
    • 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
    • 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
    • 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
    • G11B5/245—Structure or manufacture of the surface of the head in physical contact with, or immediately adjacent to the recording medium; Pole pieces; Gap features comprising means for controlling the reluctance of the magnetic circuit in a head with single gap, for co-operation with one track
    • 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
    • G11B5/3113—Details for improving the magnetic domain structure or avoiding the formation or displacement of undesirable magnetic domains
    • 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
    • G11B5/3116—Shaping of layers, poles or gaps for improving the form of the electrical signal transduced, e.g. for shielding, contour effect, equalizing, side flux fringing, cross talk reduction between heads or between heads and information tracks
    • 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
    • G11B5/3143—Disposition of layers including additional layers for improving the electromagnetic transducing properties of the basic structure, e.g. for flux coupling, guiding or shielding
    • G11B5/3146—Disposition of layers including additional layers for improving the electromagnetic transducing properties of the basic structure, e.g. for flux coupling, guiding or shielding magnetic 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
    • 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
    • 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
    • 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
    • G11B5/3916—Arrangements in which the active read-out elements are coupled to the magnetic flux of the track by at least one magnetic thin film flux guide
    • G11B5/3919—Arrangements in which the active read-out elements are coupled to the magnetic flux of the track by at least one magnetic thin film flux guide the guide being interposed in the flux path
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B13/00—Recording simultaneously or selectively by methods covered by different main groups among G11B3/00, G11B5/00, G11B7/00 and G11B9/00; Record carriers therefor not otherwise provided for; Reproducing therefrom not otherwise provided for
    • G11B13/04—Recording simultaneously or selectively by methods covered by different main groups among G11B3/00, G11B5/00, G11B7/00 and G11B9/00; Record carriers therefor not otherwise provided for; Reproducing therefrom not otherwise provided for magnetically or by magnetisation and optically or by radiation, for changing or sensing optical properties
    • G11B13/045—Recording simultaneously or selectively by methods covered by different main groups among G11B3/00, G11B5/00, G11B7/00 and G11B9/00; Record carriers therefor not otherwise provided for; Reproducing therefrom not otherwise provided for magnetically or by magnetisation and optically or by radiation, for changing or sensing optical properties combined recording by magnetic and optic means
    • 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
    • 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
    • G11B2005/0008—Magnetic conditionning of heads, e.g. biasing
    • 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
    • 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
    • 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
    • G11B5/245—Structure or manufacture of the surface of the head in physical contact with, or immediately adjacent to the recording medium; Pole pieces; Gap features comprising means for controlling the reluctance of the magnetic circuit in a head with single gap, for co-operation with one track
    • G11B5/2452—Structure or manufacture of the surface of the head in physical contact with, or immediately adjacent to the recording medium; Pole pieces; Gap features comprising means for controlling the reluctance of the magnetic circuit in a head with single gap, for co-operation with one track where the dimensions of the effective gap are controlled

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Nanotechnology (AREA)
  • Physics & Mathematics (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Electromagnetism (AREA)
  • Mathematical Physics (AREA)
  • Theoretical Computer Science (AREA)
  • Magnetic Heads (AREA)
  • Recording Or Reproducing By Magnetic Means (AREA)
KR1020010014019A 2000-07-28 2001-03-19 자기 헤드 및 자기 기록 재생 장치 Expired - Fee Related KR100786929B1 (ko)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2000-228874 2000-07-28
JP2000228874A JP3839227B2 (ja) 2000-07-28 2000-07-28 磁気ヘッド、磁気記録再生装置、磁気記録情報の再生方法及び磁気記録方法

Publications (2)

Publication Number Publication Date
KR20020010447A KR20020010447A (ko) 2002-02-04
KR100786929B1 true KR100786929B1 (ko) 2007-12-17

Family

ID=18722088

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020010014019A Expired - Fee Related KR100786929B1 (ko) 2000-07-28 2001-03-19 자기 헤드 및 자기 기록 재생 장치

Country Status (6)

Country Link
US (2) US6728080B2 (https=)
EP (1) EP1176585B1 (https=)
JP (1) JP3839227B2 (https=)
KR (1) KR100786929B1 (https=)
CN (1) CN1223997C (https=)
TW (1) TW513709B (https=)

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3839227B2 (ja) 2000-07-28 2006-11-01 株式会社日立グローバルストレージテクノロジーズ 磁気ヘッド、磁気記録再生装置、磁気記録情報の再生方法及び磁気記録方法
US7532434B1 (en) * 2001-09-06 2009-05-12 Schreck Erhard T Recessed write pole for perpendicular recording
US6888705B2 (en) * 2002-01-18 2005-05-03 Hitachi Global Storage Technologies Netherlands B.V. High linear density tunnel junction flux guide read head with in-stack longitudinal bias stack (LBS)
US7170721B2 (en) 2002-06-25 2007-01-30 Quantum Corporation Method of producing flux guides in magnetic recording heads
JP4144867B2 (ja) 2002-08-09 2008-09-03 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
JP4016857B2 (ja) * 2002-10-18 2007-12-05 ヤマハ株式会社 磁気センサ及びその製造方法
JP3835447B2 (ja) * 2002-10-23 2006-10-18 ヤマハ株式会社 磁気センサ、同磁気センサの製造方法及び同製造方法に適したマグネットアレイ
US7271981B2 (en) * 2003-11-20 2007-09-18 Seagate Technology Llc Ultrafast pulse field source utilizing optically induced magnetic transformation
US7290325B2 (en) 2004-08-13 2007-11-06 Quantum Corporation Methods of manufacturing magnetic heads with reference and monitoring devices
US7751154B2 (en) 2005-05-19 2010-07-06 Quantum Corporation Magnetic recording heads with bearing surface protections and methods of manufacture
US7869309B2 (en) * 2005-08-11 2011-01-11 Seagate Technology Llc Dual wire integrated WAMR/HAMR writing head
US7944780B2 (en) 2006-12-07 2011-05-17 Konica Minolta Opto, Inc. Magnetic recording device and magnetic recording head drive mechanism having a magnetic applying section of a specific length
JP4539672B2 (ja) * 2007-03-27 2010-09-08 Ｔｄｋ株式会社 熱アシスト磁気ヘッド、ヘッドジンバルアセンブリ及びハードディスク装置
US8270257B2 (en) * 2008-01-31 2012-09-18 Hitachi Global Storage Technologies Netherlands B.V. Thermally assisted recording systems with low loss light redirection structure
US8406090B2 (en) * 2008-03-04 2013-03-26 HGST Netherlands B.V. Laser power sensor for thermally assisted magnetic recording
US9245562B1 (en) 2015-03-30 2016-01-26 Western Digital (Fremont), Llc Magnetic recording writer with a composite main pole
JP6390728B2 (ja) * 2017-02-22 2018-09-19 Tdk株式会社 磁気センサとその製造方法

Citations (2)

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JPH01224910A (ja) * 1988-03-03 1989-09-07 Fujitsu Ltd 薄膜磁気ヘッド
JPH06267034A (ja) * 1993-03-17 1994-09-22 Fujitsu Ltd 磁気抵抗効果型薄膜ヘッド

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JPS6437702A (en) * 1987-07-31 1989-02-08 Matsushita Electric Industrial Co Ltd Magnetic head
US5385637A (en) * 1992-12-07 1995-01-31 Read-Rite Corporation Stabilizing domains in inductive thin film heads
US5995339A (en) * 1993-03-18 1999-11-30 Fujitsu Limited Magnetoresistive head with a front flux guide and an embedded MR element
JPH07134804A (ja) * 1993-09-17 1995-05-23 Fujitsu Ltd 記録再生装置及び記録再生方法
US6118611A (en) * 1993-12-14 2000-09-12 Fujitsu Limited Signal reproducing circuit adapted to head utilizing magneto-resistive effect
US5930084A (en) * 1996-06-17 1999-07-27 International Business Machines Corporation Stabilized MR sensor and flux guide joined by contiguous junction
US5856891A (en) * 1997-01-22 1999-01-05 Vtc Inc. MR resistive-biasing scheme providing low noise high common-mode rejection and high supply rejection
JP2001507806A (ja) * 1997-10-29 2001-06-12 コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ スピン−トンネル接合から成る磁界センサー
US5930087A (en) * 1997-11-20 1999-07-27 Hewlett-Packard Company Robust recording head for near-contact operation
WO1999053494A1 (en) * 1998-04-09 1999-10-21 Seagate Technology Llc Storage disk comprising depressions and/or raised features
JP3180785B2 (ja) * 1998-11-27 2001-06-25 日本電気株式会社 ヨーク型磁気抵抗効果ヘッド、ヨーク型磁気抵抗効果複合薄膜ヘッドおよび磁気記憶装置
JP3839227B2 (ja) * 2000-07-28 2006-11-01 株式会社日立グローバルストレージテクノロジーズ 磁気ヘッド、磁気記録再生装置、磁気記録情報の再生方法及び磁気記録方法

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01224910A (ja) * 1988-03-03 1989-09-07 Fujitsu Ltd 薄膜磁気ヘッド
JPH06267034A (ja) * 1993-03-17 1994-09-22 Fujitsu Ltd 磁気抵抗効果型薄膜ヘッド

Also Published As

Publication number Publication date
EP1176585B1 (en) 2011-10-05
JP3839227B2 (ja) 2006-11-01
EP1176585A3 (en) 2007-03-21
CN1336635A (zh) 2002-02-20
US20020015251A1 (en) 2002-02-07
US6728080B2 (en) 2004-04-27
TW513709B (en) 2002-12-11
US6690526B2 (en) 2004-02-10
KR20020010447A (ko) 2002-02-04
JP2002050012A (ja) 2002-02-15
US20020012205A1 (en) 2002-01-31
EP1176585A2 (en) 2002-01-30
CN1223997C (zh) 2005-10-19

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