KR870009339A - 수직 자기기록 매체 - Google Patents

수직 자기기록 매체 Download PDF

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Publication number
KR870009339A
KR870009339A KR870002400A KR870002400A KR870009339A KR 870009339 A KR870009339 A KR 870009339A KR 870002400 A KR870002400 A KR 870002400A KR 870002400 A KR870002400 A KR 870002400A KR 870009339 A KR870009339 A KR 870009339A
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KR
South Korea
Prior art keywords
metal
perpendicular magnetic
film
magnetic recording
anisotropic film
Prior art date
Application number
KR870002400A
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English (en)
Other versions
KR930004442B1 (ko
Inventor
쇼오고 나스
고오지 사이기
Original Assignee
니이노 마비도
가네가 후찌 가가꾸 고오교오 가부시끼 가이샤
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 니이노 마비도, 가네가 후찌 가가꾸 고오교오 가부시끼 가이샤 filed Critical 니이노 마비도
Publication of KR870009339A publication Critical patent/KR870009339A/ko
Application granted granted Critical
Publication of KR930004442B1 publication Critical patent/KR930004442B1/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
    • G11B5/65—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

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  • 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)

Abstract

내용 없음

Description

수직 자기기록 매체
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음
제1도는 산소 분압이 4.5x10-4Torr인 조건하에서 스퍼터링법으로 형성한 수직 자기 이방성 필름에 있어서 포화자화(Ms)와 필름내 Fe와 Co의 전체 원자수에 대한 Co 원자수의 비(X)와의 상호 관계를 나타낸 그래프임:
제2도는 제1도에서와 같은 조건하에서 형성한 수직 자기 이방성 필름에 있어 수직 항자력(HCT)과 Co의 비(원자비 X)와의 상호관계를 나타내는 그래프임:
제3도는 제1도에서와 같은 조건하에서 형성한 수직 자기 이방성 필름에 있어 수직 이방성 자기장(Hk)과 Co의 비(원자비 X)와의 상호 관계를 나타낸 그래프임:

Claims (6)

  1. 수직 자기 이방성 필름이 다음 일반식으로 표시되는 조성을 갖는 금속의 아산화물 필름이며, 그리고 필름면에 수직인 용이 자화축을 지니고 있고, 또한 X-선 회절 스펙트럼으로 관측한 결과 산화된 Fe에 의해 야기되는 회절된 X-선 강도의 피크와 금속상태의 Fe와 Co 및 금속 M에 의해 야기되는 회절된 X-선 강도의 피크 모두를 지님을 특징으로 하는, 기질 그리고 기질상에 형성된 수직 자기 이방성 필름으로 이루어진 수직 자기기록 매체:
    [(Fe1-xCOx)1-yMy]1-zOz
    (위의 일반식에서 X는 0.01X0.75의 범위이고, Y는 0Y0.30의 범위이며, M은 Fe와 Co를 배제한 최소한 한 종류의 금속을 의미한다.)
  2. 제1항에 있어서, 80% 이상의 Co가 금속상태로 잔류하며 30% 이상의 Fe가 FeO 상태인 수직 자기 기록매체.
  3. 제1항 내지 2항중의 어느 하나에 있어서, 금속 M이 al, Cr, Mo, Ti 및 Zr로 이루어진 그룹에서 선택된 최소한 한 종류의 금속인 매체.
  4. 제1항 내지 3항중의 어느 하나에 있어서, 포화자화 값이 350[emu/㎤]이상인 매체.
  5. 제1항 내지 4제항중의 어느 하나에 있어서, 수직 자기 이방성 필름이 rf-스퍼터링법이나 rf-마그네트론 스퍼터링법으로써 형성한 필름인 매체.
  6. 제1항 내지 5항중의 어느 하나에 있어서, 유연성 자기층이 기질과 수직 자기 이방성 필름과의 사이에 형성된 매체.
    ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.
KR1019870002400A 1986-03-18 1987-03-17 수직 자기기록 매체 KR930004442B1 (ko)

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
JP6018486 1986-03-18
JP61-60184 1986-03-18
JP60184 1986-03-18
JP224214 1986-09-22
JP61224214A JPS6379227A (ja) 1986-09-22 1986-09-22 垂直磁気記録媒体
JP61-224214 1986-09-29

Publications (2)

Publication Number Publication Date
KR870009339A true KR870009339A (ko) 1987-10-26
KR930004442B1 KR930004442B1 (ko) 1993-05-27

Family

ID=26401252

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019870002400A KR930004442B1 (ko) 1986-03-18 1987-03-17 수직 자기기록 매체

Country Status (6)

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

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
EP0673021B1 (en) * 1994-03-16 2000-08-02 Toda Kogyo Corp. Magnetic recording medium and process for producing the same
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
JPS59198707A (ja) * 1983-04-26 1984-11-10 Ulvac Corp 垂直磁気記録体
EP0122030B1 (en) * 1983-03-08 1987-08-26 Nihon Shinku Gijutsu Kabushiki Kaisha A magnetic recording member and a manufacturing method for such a member
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
US4797330A (en) 1989-01-10
US5034286A (en) 1991-07-23
EP0238047A3 (en) 1989-08-30
CN1009401B (zh) 1990-08-29
CA1315612C (en) 1993-04-06
DE3789980T2 (de) 1995-01-05
EP0238047A2 (en) 1987-09-23
EP0238047B1 (en) 1994-06-08
DE3789980D1 (de) 1994-07-14
KR930004442B1 (ko) 1993-05-27
CN87101975A (zh) 1987-10-21

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