DE3789980D1 - Magnetisches Speichermedium mit senkrechter Anisotropie. - Google Patents

Magnetisches Speichermedium mit senkrechter Anisotropie.

Info

Publication number
DE3789980D1
DE3789980D1 DE3789980T DE3789980T DE3789980D1 DE 3789980 D1 DE3789980 D1 DE 3789980D1 DE 3789980 T DE3789980 T DE 3789980T DE 3789980 T DE3789980 T DE 3789980T DE 3789980 D1 DE3789980 D1 DE 3789980D1
Authority
DE
Germany
Prior art keywords
storage medium
magnetic storage
vertical anisotropy
anisotropy
vertical
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
DE3789980T
Other languages
English (en)
Other versions
DE3789980T2 (de
Inventor
Shogo Nasu
Koji Saiki
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.)
Kanegafuchi Chemical Industry Co Ltd
Original Assignee
Kanegafuchi Chemical Industry Co 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
Priority claimed from JP61224214A external-priority patent/JPS6379227A/ja
Application filed by Kanegafuchi Chemical Industry Co Ltd filed Critical Kanegafuchi Chemical Industry Co Ltd
Application granted granted Critical
Publication of DE3789980D1 publication Critical patent/DE3789980D1/de
Publication of DE3789980T2 publication Critical patent/DE3789980T2/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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F10/00—Thin magnetic films, e.g. of one-domain structure
    • H01F10/08—Thin magnetic films, e.g. of one-domain structure characterised by magnetic layers
    • H01F10/10—Thin magnetic films, e.g. of one-domain structure characterised by magnetic layers characterised by the composition
    • H01F10/18—Thin magnetic films, e.g. of one-domain structure characterised by magnetic layers characterised by the composition being compounds
    • H01F10/20—Ferrites
    • 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
    • G11B5/658—Record carriers characterised by the selection of the material comprising only the magnetic material without bonding agent characterised by its composition containing oxygen, e.g. molecular oxygen or magnetic oxide
    • 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
    • G11B5/66—Record carriers characterised by the selection of the material comprising only the magnetic material without bonding agent the record carriers consisting of several layers
    • G11B5/667—Record carriers characterised by the selection of the material comprising only the magnetic material without bonding agent the record carriers consisting of several layers including a soft magnetic layer
    • 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
    • G11B2005/0026—Pulse recording
    • G11B2005/0029—Pulse recording using magnetisation components of the recording layer disposed mainly perpendicularly to the record carrier surface
    • 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
    • Y10T428/12—All metal or with adjacent metals
    • Y10T428/12465—All metal or with adjacent metals having magnetic properties, or preformed fiber orientation coordinate with shape

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Chemical & Material Sciences (AREA)
  • Materials Engineering (AREA)
  • Power Engineering (AREA)
  • Magnetic Record Carriers (AREA)
  • Thin Magnetic Films (AREA)
DE3789980T 1986-03-18 1987-03-17 Magnetisches Speichermedium mit senkrechter Anisotropie. Expired - Fee Related DE3789980T2 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP6018486 1986-03-18
JP61224214A JPS6379227A (ja) 1986-09-22 1986-09-22 垂直磁気記録媒体

Publications (2)

Publication Number Publication Date
DE3789980D1 true DE3789980D1 (de) 1994-07-14
DE3789980T2 DE3789980T2 (de) 1995-01-05

Family

ID=26401252

Family Applications (1)

Application Number Title Priority Date Filing Date
DE3789980T Expired - Fee Related DE3789980T2 (de) 1986-03-18 1987-03-17 Magnetisches Speichermedium mit senkrechter Anisotropie.

Country Status (6)

Country Link
US (2) US4797330A (de)
EP (1) EP0238047B1 (de)
KR (1) KR930004442B1 (de)
CN (1) CN1009401B (de)
CA (1) CA1315612C (de)
DE (1) DE3789980T2 (de)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1315612C (en) * 1986-03-18 1993-04-06 Shogo Nasu Perpendicular magnetic storage medium
JPH01248312A (ja) * 1988-03-29 1989-10-03 Kanegafuchi Chem Ind Co Ltd 垂直磁気記録媒体
US5143794A (en) * 1988-08-10 1992-09-01 Hitachi, Ltd. Magnetic recording media for longitudinal recording, process for producing the same and magnetic memory apparatus
EP0443478A3 (en) * 1990-02-19 1992-03-11 Kanegafuchi Kagaku Kogyo Kabushiki Kaisha Magnetic recording medium and method for preparing the same
JPH05109046A (ja) * 1990-12-13 1993-04-30 Hitachi Maxell Ltd 磁気記録媒体及びその製造方法
JP2924935B2 (ja) * 1992-08-26 1999-07-26 戸田工業株式会社 垂直磁化膜、垂直磁化膜用多層膜及び垂直磁化膜の製造法
US5587235A (en) * 1993-02-19 1996-12-24 Hitachi, Ltd. Magnetic recording medium and magnetic recording apparatus
JPH0785401A (ja) * 1993-09-13 1995-03-31 Sony Corp 磁気記録方式
US5558945A (en) * 1993-12-28 1996-09-24 Tdk Corporation Magnetic recording medium
DE69518179T2 (de) * 1994-03-16 2001-01-18 Toda Kogyo Corp Magnetisches Aufzeichnungsmedium sowie Verfahren zu seiner Herstellung
JP3582435B2 (ja) * 1999-12-10 2004-10-27 日本電気株式会社 垂直磁気記録媒体
US7160636B2 (en) * 2002-09-13 2007-01-09 Nec Tokin Corporation Ferrite thin film, method of manufacturing the same and electromagnetic noise suppressor using the same
US8394243B1 (en) 2008-07-24 2013-03-12 Wd Media, Inc. Sputtered cobalt oxide for perpendicular magnetic recording medium with low media noise
US8488276B1 (en) 2008-09-30 2013-07-16 WD Media, LLC Perpendicular magnetic recording medium with grain isolation magnetic anistropy layer
US8993133B1 (en) 2010-12-23 2015-03-31 WD Media, LLC Intermediate layer for perpendicular magnetic recording medium with high permeability grain boundaries
US9685184B1 (en) 2014-09-25 2017-06-20 WD Media, LLC NiFeX-based seed layer for magnetic recording media

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5571006A (en) * 1978-11-22 1980-05-28 Matsushita Electric Ind Co Ltd Magnetic thin film and its manufacturing method
JPS57152517A (en) * 1981-03-17 1982-09-20 Matsushita Electric Ind Co Ltd Magnetic recording medium
JPS5883328A (ja) * 1981-11-12 1983-05-19 Fuji Photo Film Co Ltd 磁気記録媒体
EP0122030B1 (de) * 1983-03-08 1987-08-26 Nihon Shinku Gijutsu Kabushiki Kaisha Magnetisches Aufzeichnungsmedium und Herstellungsverfahren für ein derartiges Medium
JPS59198707A (ja) * 1983-04-26 1984-11-10 Ulvac Corp 垂直磁気記録体
JPS59215025A (ja) * 1983-05-21 1984-12-04 Ulvac Corp 垂直磁気記録体の製造法
JPS6035328A (ja) * 1983-08-06 1985-02-23 Canon Inc 磁気記録媒体
CA1315612C (en) * 1986-03-18 1993-04-06 Shogo Nasu Perpendicular magnetic storage medium
DE3710477C2 (de) * 1986-03-31 1999-05-12 Japan Res Dev Corp Dünne Schicht mit senkrechter Magnetisierungsisotropie

Also Published As

Publication number Publication date
EP0238047A2 (de) 1987-09-23
US4797330A (en) 1989-01-10
KR930004442B1 (ko) 1993-05-27
CA1315612C (en) 1993-04-06
US5034286A (en) 1991-07-23
DE3789980T2 (de) 1995-01-05
CN1009401B (zh) 1990-08-29
CN87101975A (zh) 1987-10-21
EP0238047A3 (en) 1989-08-30
KR870009339A (ko) 1987-10-26
EP0238047B1 (de) 1994-06-08

Similar Documents

Publication Publication Date Title
DE3778168D1 (de) Magnetisches aufzeichnungsmedium.
DE3773239D1 (de) Magnetisches aufzeichnungsmedium.
DE3683397D1 (de) Aufzeichnungsmedium mit longitudinal ausgerichteter magnetischer schicht.
DE3780398T2 (de) Plattenspeicher mit filtrierungssystem.
DE3177152D1 (de) Magnetisches speichermedium.
DE3480749D1 (de) Magnetisches aufzeichnungsmedium.
DE3789980D1 (de) Magnetisches Speichermedium mit senkrechter Anisotropie.
NL190296C (nl) Magnetisch registratiemedium.
DE3685219D1 (de) Magnetisches speichermedium.
DE3880048T2 (de) Aufzeichnungsträger mit senkrechter Magnetisierung.
DE3777081D1 (de) Informationsspeichermedium.
DE3484322D1 (de) Magnetisches aufzeichnungsmedium.
DE3873332T2 (de) Magnetisches speichermedium.
NL191422C (nl) Magnetisch registreermedium.
DE3788450D1 (de) Grossrauminformationsspeicher mit mehreren Magnetplatteneinheiten.
NL190251C (nl) Magnetisch registreermedium.
DE3770436D1 (de) Magnetisches aufzeichnungsmedium.
DE68909520D1 (de) Magneto-optisches speichermedium.
DE3887882T2 (de) Datenspeicherungsmedium.
DE3887589D1 (de) Magnetooptischer Aufzeichnungsträger.
DE3689420D1 (de) Magnetisches aufnahmemedium.
DE69013819T2 (de) Magnetisches Aufzeichnungsmedium.
DE3885711D1 (de) Magnetooptischer Aufzeichnungsträger.
DE3887652T2 (de) Magneto-optisches Speicherungsmedium.
DE3751135T2 (de) Informationsspeichermedium.

Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee