KR890005661A - 자기 기록 매체 - Google Patents

자기 기록 매체 Download PDF

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Publication number
KR890005661A
KR890005661A KR1019880011863A KR880011863A KR890005661A KR 890005661 A KR890005661 A KR 890005661A KR 1019880011863 A KR1019880011863 A KR 1019880011863A KR 880011863 A KR880011863 A KR 880011863A KR 890005661 A KR890005661 A KR 890005661A
Authority
KR
South Korea
Prior art keywords
layer
magnetic
recording medium
magnetic recording
soft magnetic
Prior art date
Application number
KR1019880011863A
Other languages
English (en)
Inventor
오사무 기따까미
히데오 후지와라
요우이찌 오가와
Original Assignee
나가이 아쯔시
히다찌 마꾸세루 가부시기가이샤
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 나가이 아쯔시, 히다찌 마꾸세루 가부시기가이샤 filed Critical 나가이 아쯔시
Publication of KR890005661A publication Critical patent/KR890005661A/ko

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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
    • G11B5/66—Record carriers characterised by the selection of the material comprising only the magnetic material without bonding agent the record carriers consisting of several layers
    • G11B5/676—Record carriers characterised by the selection of the material comprising only the magnetic material without bonding agent the record carriers consisting of several layers having magnetic layers separated by a nonmagnetic layer, e.g. antiferromagnetic layer, Cu layer or coupling 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
    • G11B5/736—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
    • G11B5/64—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
    • G11B5/653—Record carriers characterised by the selection of the material comprising only the magnetic material without bonding agent characterised by its composition containing Fe or Ni
    • 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
    • Y10T428/26—Web or sheet containing structurally defined element or component, the element or component having a specified physical dimension
    • 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

Landscapes

  • Magnetic Record Carriers (AREA)

Abstract

내용 없음

Description

자기 기록 매체
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음
제1도는~제4도는 본 발명의 자기 기록 매체의 단면 구조를 도시한 부분적인 개요도.

Claims (9)

  1. 비자상 기판(1)위에 비자성 바닥층(2)를 개재시키던가 또는 개재시키지 않고 연자성층(3)을 마련하고 또 상기 연자성층(3)위에 비자성 중간층(4)를 개재시키던가 또는 개재시키지 않고 수직 자기 이방성 기록층(5)를 적층한 자기 기록 매체에 있어서, 연자 성층(3)의 포화자화가 적어도 기록층(5)의 포화자화보다도 높은 재료로 구성되고, 또한 연자성층(3)의 막두께가 50Å~1000Å미만의 범위내에 있는 자기 기록 매체.
  2. 특히 청구의 범위 제1항에 있어서, 상기 연자성층(3)은 Ni-Fe(퍼멀로이)막, Co 또는 Co-M 합금층(여기에서, M은 Cr, Ge, Mo, Os, Pt, Re, Ru, Sb, Si, Ta, V, W 및 Zn으로 되는 군에서 선택되는 1종류의 원소)로 구성되는 자기 기록매체
  3. 특히 청구의 범위 제2항에 있어서, 상기 Co-M 합금에 있어서 원소 M의 함유량은 2~20at%이며, M이 Cr 원소인 경우 Cr의 함유율은 12at%이하인 자기 기록매체
  4. 특히 청구의 범위 제1항 내지 제3항중 어느 한 항에 있어서, 상기 연자성층(3)의 막두께가 50~500Å의 범위내의 자기 기록매체
  5. 특히 청구의 범위 제1항 내지 제3항중 어느 한 항에 있어서, 수직 자기 이방성 기록층(5)가 적층되는 연자성층(3)은 Cr 함유율이 12at%이하인 Co-Cr 합금인 자기 기록매체
  6. 특허 청구의 범위 제4항에 있어서, 수직 자기 이방성 기록층(5)가 적층되는 연자성층(3)은 Cr 함유율이 12at%이하인 Co-Cr 합금인 자기 기록매체
  7. 특허 청구의 범위 제5항에 있어서, 수직 자기 이방성 기록층(5)는 Cr 함유율이 15~25at%인 Co-Cr 합금이며, 그 막두께가 500~3000℃의 범위내인 자기 기록매체.
  8. 특허 청구의 범위 제1항에 있어서, 비자성 중간층(4)의 막두께는 300Å이하인 자기 기록매체.
  9. 특허 청구의 범위 제1항에 있어서, 비자성 중간층(4)는 B, C, Ge, Mo, Si, Os, Ru, Re, Ta, Ti, W에서 선택되는 원소의 단체 또는 이들 원소의 합금, 산화물 또는 질화물로 되는 자기 기록매체.
    ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.
KR1019880011863A 1987-09-21 1988-09-14 자기 기록 매체 KR890005661A (ko)

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
JP23688487 1987-09-21
JP23688387 1987-09-21
JP62-236883 1987-09-21
JP62-236884 1987-09-21
JP63-57918 1988-03-11
JP63057918A JP2524514B2 (ja) 1987-09-21 1988-03-11 磁気記録媒体

Publications (1)

Publication Number Publication Date
KR890005661A true KR890005661A (ko) 1989-05-16

Family

ID=27296421

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019880011863A KR890005661A (ko) 1987-09-21 1988-09-14 자기 기록 매체

Country Status (5)

Country Link
US (1) US5543221A (ko)
EP (1) EP0309202B1 (ko)
JP (1) JP2524514B2 (ko)
KR (1) KR890005661A (ko)
DE (1) DE3850833T2 (ko)

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KR100464318B1 (ko) * 2002-10-01 2005-01-03 삼성전자주식회사 자기기록매체

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Also Published As

Publication number Publication date
JP2524514B2 (ja) 1996-08-14
US5543221A (en) 1996-08-06
DE3850833T2 (de) 1994-11-17
EP0309202A3 (en) 1990-07-18
EP0309202A2 (en) 1989-03-29
EP0309202B1 (en) 1994-07-27
DE3850833D1 (de) 1994-09-01
JPH01158618A (ja) 1989-06-21

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