DE69715706D1 - Magnetisches Aufzeichnungsmedium mit feinkörnigen magnetischen Kristallen und seiner Herstellung - Google Patents

Magnetisches Aufzeichnungsmedium mit feinkörnigen magnetischen Kristallen und seiner Herstellung

Info

Publication number
DE69715706D1
DE69715706D1 DE69715706T DE69715706T DE69715706D1 DE 69715706 D1 DE69715706 D1 DE 69715706D1 DE 69715706 T DE69715706 T DE 69715706T DE 69715706 T DE69715706 T DE 69715706T DE 69715706 D1 DE69715706 D1 DE 69715706D1
Authority
DE
Germany
Prior art keywords
magnetic
fine
manufacture
recording medium
grained
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.)
Expired - Fee Related
Application number
DE69715706T
Other languages
English (en)
Other versions
DE69715706T2 (de
Inventor
Ryoichi Mukai
Kazunori Yamanaka
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.)
Resonac Holdings Corp
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.)
Filing date
Publication date
Application filed by Fujitsu Ltd filed Critical Fujitsu Ltd
Application granted granted Critical
Publication of DE69715706D1 publication Critical patent/DE69715706D1/de
Publication of DE69715706T2 publication Critical patent/DE69715706T2/de
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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
    • G11B5/62—Record carriers characterised by the selection of the material
    • G11B5/64—Record carriers characterised by the selection of the material comprising only the magnetic material without bonding agent
    • G11B5/65—Record carriers characterised by the selection of the material comprising only the magnetic material without bonding agent characterised by its composition
    • G11B5/656—Record carriers characterised by the selection of the material comprising only the magnetic material without bonding agent characterised by its composition containing Co
    • 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
    • G11B5/84—Processes or apparatus specially adapted for manufacturing record carriers
    • G11B5/851—Coating a support with a magnetic layer by sputtering
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S428/00—Stock material or miscellaneous articles
    • Y10S428/90—Magnetic feature
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24355—Continuous and nonuniform or irregular surface on layer or component [e.g., roofing, etc.]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/26—Web or sheet containing structurally defined element or component, the element or component having a specified physical dimension
    • Y10T428/263—Coating layer not in excess of 5 mils thick or equivalent
    • Y10T428/264—Up to 3 mils
    • Y10T428/265—1 mil or less
DE69715706T 1996-03-19 1997-02-10 Magnetisches Aufzeichnungsmedium mit feinkörnigen magnetischen Kristallen und seiner Herstellung Expired - Fee Related DE69715706T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP06343496A JP3669457B2 (ja) 1996-03-19 1996-03-19 磁気記録媒体及びその製造方法

Publications (2)

Publication Number Publication Date
DE69715706D1 true DE69715706D1 (de) 2002-10-31
DE69715706T2 DE69715706T2 (de) 2003-02-06

Family

ID=13229175

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69715706T Expired - Fee Related DE69715706T2 (de) 1996-03-19 1997-02-10 Magnetisches Aufzeichnungsmedium mit feinkörnigen magnetischen Kristallen und seiner Herstellung

Country Status (4)

Country Link
US (1) US6171676B1 (de)
EP (1) EP0797192B1 (de)
JP (1) JP3669457B2 (de)
DE (1) DE69715706T2 (de)

Families Citing this family (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SG54536A1 (en) 1996-07-26 1998-11-16 Toshiba Kk Magnetic recording apparatus
US6665145B2 (en) * 1999-02-10 2003-12-16 Tdk Corporation Magnetic recording medium with unit minute recording portions
RU2169399C1 (ru) * 2000-02-11 2001-06-20 Общество с ограниченной ответственностью "ЛабИНТЕХ" (Лаборатория ионных нанотехнологий) Способ изготовления магнитного носителя
SG88784A1 (en) 2000-07-17 2002-05-21 Inst Data Storage Method of producing a magnetic recording medium
JP2002133646A (ja) * 2000-10-25 2002-05-10 Fujitsu Ltd 多結晶構造膜およびその製造方法
WO2003009280A1 (fr) * 2001-07-11 2003-01-30 Fujitsu Limited Support d'enregistrement magnetique et procede de fabrication associe
WO2004001725A1 (en) * 2002-06-21 2003-12-31 Seagate Technology Llc Multilayer magnetic recording media
WO2004034385A1 (ja) * 2002-10-10 2004-04-22 Fujitsu Limited 多結晶構造膜およびその製造方法
US7064089B2 (en) * 2002-12-10 2006-06-20 Semiconductor Energy Laboratory Co., Ltd. Plasma treatment apparatus and method for plasma treatment
JP3816911B2 (ja) * 2003-09-30 2006-08-30 株式会社東芝 磁気記録媒体
US6947235B2 (en) * 2003-12-03 2005-09-20 Hitachi Global Storage Technologies Netherlands B.V. Patterned multilevel perpendicular magnetic recording media
US7158346B2 (en) 2003-12-23 2007-01-02 Seagate Technology Llc Heat assisted magnetic recording film including superparamagnetic nanoparticles dispersed in an antiferromagnetic or ferrimagnetic matrix
KR100693855B1 (ko) * 2005-02-17 2007-03-13 후지쯔 가부시끼가이샤 다결정 구조막 및 그 제조 방법
JP4008933B2 (ja) * 2005-05-16 2007-11-14 株式会社東芝 磁気記録媒体およびその製造方法ならびに磁気記録装置
JP2006331540A (ja) * 2005-05-26 2006-12-07 Toshiba Corp 磁気記録媒体および磁気記録装置
US7704614B2 (en) 2006-10-20 2010-04-27 Seagate Technology Llc Process for fabricating patterned magnetic recording media
JP2008282512A (ja) * 2007-05-14 2008-11-20 Toshiba Corp 磁気記録媒体及び磁気記録再生装置
JP4621899B2 (ja) * 2007-09-26 2011-01-26 独立行政法人物質・材料研究機構 磁気媒体
US8130468B2 (en) 2007-12-17 2012-03-06 Hitachi Global Storage Technolgies Netherlands B.V. System and apparatus for patterned media with reduced magnetic trench material
JP5908377B2 (ja) 2012-09-19 2016-04-26 住友化学株式会社 金属系粒子集合体の製造方法
JP6177369B2 (ja) * 2016-03-23 2017-08-09 住友化学株式会社 金属系粒子集合体の製造方法
JP6776984B2 (ja) * 2017-03-31 2020-10-28 Tdk株式会社 永久磁石薄膜
CN108806728A (zh) * 2018-05-24 2018-11-13 联想(北京)有限公司 存储介质及其制造工艺

Family Cites Families (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3565694D1 (en) * 1984-02-02 1988-11-24 Hitachi Metals Ltd Process for manufacturing magnetic recording media
JPS6311277A (ja) 1986-07-02 1988-01-18 Nec Corp 磁気デイスク基板の加工方法
JPS6414723A (en) 1987-07-08 1989-01-18 Hitachi Ltd Substrate for magnetic disk and its production
US5030494A (en) 1989-01-26 1991-07-09 International Business Machines Corporation Carbon overcoat for a thin film magnetic recording disk containing discrete clusters of tungsten (W) or tungsten carbide (WC) which project from the surface of the overcoat
US5227212A (en) 1989-03-16 1993-07-13 International Business Machines Corporation Magnetic recording disk, magnetoresistive read head, inductive write head combination
JPH03245322A (ja) 1989-03-29 1991-10-31 Asahi Glass Co Ltd 磁気ディスク用ガラス基板の製造方法
US5162158A (en) * 1989-07-24 1992-11-10 Magnetic Peripherals Inc. Low noise magnetic thin film longitudinal media
JPH0369018A (ja) 1989-08-05 1991-03-25 Mitsubishi Electric Corp 磁気ディスク
US5062938A (en) 1990-01-16 1991-11-05 International Business Machines Corporation High coercivity low noise cobalt alloy magnetic recording medium and its manufacturing process
JPH03241526A (ja) 1990-02-19 1991-10-28 Matsushita Electric Ind Co Ltd 磁気記録媒体
JPH041922A (ja) * 1990-04-18 1992-01-07 Hitachi Ltd 面内磁気記録媒体及び磁気記憶装置
JPH071537B2 (ja) 1991-09-24 1995-01-11 インターナショナル・ビジネス・マシーンズ・コーポレイション 磁気記録ディスク、基板及びその製造方法
JP2559941B2 (ja) * 1992-03-16 1996-12-04 インターナショナル・ビジネス・マシーンズ・コーポレイション 磁気記録媒体及びその製造方法並びに磁気記録装置
TW216460B (de) * 1992-03-24 1993-11-21 Dow Chemical Co
JPH06309648A (ja) 1993-02-26 1994-11-04 Mitsubishi Kasei Corp 磁気記録媒体
DE4408274C2 (de) * 1993-03-12 2001-04-26 Toshiba Kawasaki Kk Magnetoresistenzeffekt-Element
US5585198A (en) * 1993-10-20 1996-12-17 Sanyo Electric Co., Ltd. Magnetorsistance effect element
EP0629998A2 (de) * 1993-06-18 1994-12-21 International Business Machines Corporation Magnetoresistiver Film, Verfahren zu seiner Herstellung und magnetoresistiver Sensor
US5452163A (en) 1993-12-23 1995-09-19 International Business Machines Corporation Multilayer magnetoresistive sensor
JP2947708B2 (ja) 1994-04-28 1999-09-13 旭テクノグラス株式会社 磁気ディスク用ガラス基板の製造方法

Also Published As

Publication number Publication date
DE69715706T2 (de) 2003-02-06
US6171676B1 (en) 2001-01-09
JP3669457B2 (ja) 2005-07-06
EP0797192A1 (de) 1997-09-24
EP0797192B1 (de) 2002-09-25
JPH09259425A (ja) 1997-10-03

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8327 Change in the person/name/address of the patent owner

Owner name: SHOWA DENKO K.K., MINATO-KU, TOKYO, JP

8339 Ceased/non-payment of the annual fee