ATE313145T1 - Magnetisches aufzeichnungsmedium - Google Patents

Magnetisches aufzeichnungsmedium

Info

Publication number
ATE313145T1
ATE313145T1 AT97908547T AT97908547T ATE313145T1 AT E313145 T1 ATE313145 T1 AT E313145T1 AT 97908547 T AT97908547 T AT 97908547T AT 97908547 T AT97908547 T AT 97908547T AT E313145 T1 ATE313145 T1 AT E313145T1
Authority
AT
Austria
Prior art keywords
region
metal layer
ferromagnetic metal
concentration
recording medium
Prior art date
Application number
AT97908547T
Other languages
English (en)
Inventor
Migaku Takahashi
Junichi Nakai
Original Assignee
Migaku Takahashi
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 Migaku Takahashi filed Critical Migaku Takahashi
Application granted granted Critical
Publication of ATE313145T1 publication Critical patent/ATE313145T1/de

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
    • G11B5/62—Record carriers characterised by the selection of the material
    • G11B5/73—Base layers, i.e. all non-magnetic layers lying under a lowermost magnetic recording layer, e.g. including any non-magnetic layer in between a first magnetic recording layer and either an underlying substrate or a soft magnetic underlayer
    • G11B5/736—Non-magnetic layer under a soft magnetic layer, e.g. between a substrate and a soft magnetic underlayer [SUL] or a keeper 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
    • G11B5/62—Record carriers characterised by the selection of the material
    • G11B5/73—Base layers, i.e. all non-magnetic layers lying under a lowermost magnetic recording layer, e.g. including any non-magnetic layer in between a first magnetic recording layer and either an underlying substrate or a soft magnetic underlayer
    • G11B5/7368—Non-polymeric layer under the lowermost magnetic recording layer
    • G11B5/7373—Non-magnetic single underlayer comprising chromium
    • 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
    • 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
    • Y10T428/12493—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, joint, etc.]
    • Y10T428/12771—Transition metal-base component
    • Y10T428/12806—Refractory [Group IVB, VB, or VIB] metal-base component
    • Y10T428/12826—Group VIB metal-base component
    • Y10T428/12847—Cr-base component
    • Y10T428/12854—Next to Co-, Fe-, or Ni-base component

Landscapes

  • Magnetic Record Carriers (AREA)
  • Manufacturing Of Magnetic Record Carriers (AREA)
  • Thin Magnetic Films (AREA)
  • Paints Or Removers (AREA)
  • Liquid Crystal (AREA)
  • Electrochromic Elements, Electrophoresis, Or Variable Reflection Or Absorption Elements (AREA)
AT97908547T 1997-03-28 1997-03-28 Magnetisches aufzeichnungsmedium ATE313145T1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP1997/001090 WO1998044490A1 (en) 1997-03-28 1997-03-28 Magnetic recording medium

Publications (1)

Publication Number Publication Date
ATE313145T1 true ATE313145T1 (de) 2005-12-15

Family

ID=14180342

Family Applications (1)

Application Number Title Priority Date Filing Date
AT97908547T ATE313145T1 (de) 1997-03-28 1997-03-28 Magnetisches aufzeichnungsmedium

Country Status (8)

Country Link
US (1) US6555248B1 (de)
EP (1) EP0971340B1 (de)
JP (1) JP3724814B2 (de)
KR (1) KR100514302B1 (de)
AT (1) ATE313145T1 (de)
DE (1) DE69734895T2 (de)
TW (1) TW355793B (de)
WO (1) WO1998044490A1 (de)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6596341B1 (en) * 2000-07-25 2003-07-22 Seagate Technology Llc Method of manufacturing magnetic recording media with high SNR and high thermal stability
US7273666B2 (en) * 2001-06-29 2007-09-25 Fujitsu Limited Magnetic recording medium and magnetic recording medium driving apparatus
JP2003178423A (ja) * 2001-12-12 2003-06-27 Fuji Electric Co Ltd 長手記録用磁気記録媒体およびその製造方法
JP2008123626A (ja) * 2006-11-14 2008-05-29 Hitachi Global Storage Technologies Netherlands Bv 垂直磁気記録媒体及びこれを用いた磁気記憶装置

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5082750A (en) * 1988-10-21 1992-01-21 Kubota Ltd. Magnetic recording medium of thin metal film type
WO1995003603A1 (en) * 1993-07-21 1995-02-02 Migaku Takahashi Magnetic recording medium and its manufacture
US5625576A (en) 1993-10-01 1997-04-29 Massachusetts Institute Of Technology Force reflecting haptic interface

Also Published As

Publication number Publication date
WO1998044490A1 (en) 1998-10-08
US6555248B1 (en) 2003-04-29
EP0971340A1 (de) 2000-01-12
DE69734895D1 (de) 2006-01-19
JP3724814B2 (ja) 2005-12-07
KR20010005787A (ko) 2001-01-15
KR100514302B1 (ko) 2005-09-13
EP0971340A4 (de) 2000-03-22
TW355793B (en) 1999-04-11
EP0971340B1 (de) 2005-12-14
DE69734895T2 (de) 2006-08-03

Similar Documents

Publication Publication Date Title
GB2396740A (en) Anti-ferromagnetically coupled perpendicular magnetic recording media
MY126108A (en) Recording medium and method for manufacturing the same
EP0319004A2 (de) Magneto-optisches Aufzeichnungsmedium
US5289202A (en) Magnetic recording apparatus and magnetic recording medium with a film to be vertically magnetized sandwitched with soft magnetic films
EP0940803A3 (de) Magnetische Aufzeichnungs-/Wiedergabemethode
JPH0363932A (ja) 縦記録のための磁気媒体
MY129763A (en) Magnetic recording medium and a method for manufacturing the same
DE69734895D1 (de) Magnetisches aufzeichnungsmedium
US4897749A (en) Combination probe and ring head for vertical recording
EP0892394A3 (de) Magnetisches Aufzeichnungsmedium
JPS6171437A (ja) 光磁気デイスク
JPS56153546A (en) Magnetic recording medium
US20030169615A1 (en) Information recording medium and information storing device
JPH0237501A (ja) 磁気記録方式及び磁気記録装置
Saito et al. Magnetic printing technique for longitudinal thin film media with high coercivity of 6000 Oe
EP1187104A3 (de) Magnetaufzeichnungskopf, Magnetwiedergabekopf, Magnetaufzeichnungsgerät und Magnetwiedergabegerät
EP0768656A3 (de) Magneto-optisches Aufzeichnungsmedium und -verfahren sowie Gerät damit
JPS6174112A (ja) 磁気ヘツド
JPS5727427A (en) Magnetic recording medium
EP0923073A3 (de) Magneto-optisches Aufzeichnungsmedium zur vereinfachten Verschiebung magnetischer Domänen
JP3162168B2 (ja) 光磁気記録媒体
JP3019140B2 (ja) 垂直磁気記録媒体
Tsuchiya et al. Recorded magnetization analysis by computer simulation
JPS6489022A (en) Magnetic recording medium
JPS59208706A (ja) 熱磁気記録材料

Legal Events

Date Code Title Description
RER Ceased as to paragraph 5 lit. 3 law introducing patent treaties