KR890013615A - 실리콘 카바이드 유전체를 가진 마그네토 광학 기록매체 - Google Patents

실리콘 카바이드 유전체를 가진 마그네토 광학 기록매체 Download PDF

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KR890013615A
KR890013615A KR1019890001044A KR890001044A KR890013615A KR 890013615 A KR890013615 A KR 890013615A KR 1019890001044 A KR1019890001044 A KR 1019890001044A KR 890001044 A KR890001044 A KR 890001044A KR 890013615 A KR890013615 A KR 890013615A
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South Korea
Prior art keywords
magneto
alloy layer
transition metal
rare earth
metal alloy
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KR1019890001044A
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English (en)
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윌리암 펀큰 부시 아놀드
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도날드 밀러 셀
미네소타 마이닝 앤드 매뉴팩츄어링 컴패니
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Publication of KR890013615A publication Critical patent/KR890013615A/ko

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    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/24Record carriers characterised by shape, structure or physical properties, or by the selection of the material
    • G11B7/241Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material
    • G11B7/242Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of recording layers
    • G11B7/243Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of recording layers comprising inorganic materials only, e.g. ablative layers
    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B11/00Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor
    • G11B11/10Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field
    • G11B11/105Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field using a beam of light or a magnetic field for recording by change of magnetisation and a beam of light for reproducing, i.e. magneto-optical, e.g. light-induced thermomagnetic recording, spin magnetisation recording, Kerr or Faraday effect reproducing
    • G11B11/10582Record carriers characterised by the selection of the material or by the structure or form
    • G11B11/10586Record carriers characterised by the selection of the material or by the structure or form characterised by the selection of the material
    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B11/00Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor
    • G11B11/10Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field
    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/24Record carriers characterised by shape, structure or physical properties, or by the selection of the material
    • G11B7/26Apparatus or processes specially adapted for the manufacture of record carriers
    • YGENERAL 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
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10STECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S428/00Stock material or miscellaneous articles
    • Y10S428/90Magnetic feature

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  • Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Carbon And Carbon Compounds (AREA)

Abstract

내용 없음.

Description

실리콘 카바이드 유전체를 가진 마그네토 광학 기록매체
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음
제1도는 본 발명에 따른 실리콘 카바이드층(x=1.47)의 오오거(Auger)스펙트럼.
제2도 및 제3도는 본 발명의 실리콘 카바이드 유전체의 단면을 나타낸 것으로 본 발명의 기록매체를 200,000배율로 확대도시한 투과형 전자 현미경도.

Claims (9)

  1. 기판과, 적어도 한면에 투명한 유전체층을 가지는 무정형 자화 회토류-전이 금속 합금층 및 이 자화 합금층을 통해 빛을 반사시키도록 위치된 반사면을 구비한 마그네토 광학 기록매체에 있어서, 상기 유전체층은 식 SiCx의 실리콘 카바이드로 구성되는데, 여기서 x는 탄소대 실리콘의 몰비로서 1보다 큰 값인 것을 특징으로 하는 마그네토 광학 기록매체.
  2. 제1항에 있어서, 상기 회토류-전이 금속 합금층은 철, 데르븀 및 코발트로 구성되는 것을 특징으로 하는 마그네토 광학 기록매체.
  3. 제1항에 있어서, 상기 x는 1.2보다 큰 값을 것을 특징으로 하는 마그네토 광학 기록매체.
  4. 제1항에 있어서, 상기 유전체층의 굴절률은 2.0이상이고 3.0이하인 것을 특징으로 하는 마그네토 광학기록매체.
  5. 기판과, 무정형 자화 회토류-전이 합금층과, 이 회토류-전이 금속 합금층의 적어도 한면에 놓인 투명한 유전체층과, 이 자화 합금층을 통해 빛을 반사시키도록 위치된 반사면을 구비한 마그네토 광학 기록매체의 제조방법에 있어서, A) 기판을 제공하는 단계와, B) 마젠토 광학 효과 발생에 효과적인 층을 생성하기 위해 종래의 수단으로 무정형 자화 회토류-전이 금속 합금층을 침전시키는 단계와, C) 실리콘 및 탄소를 포함한 전기전도성 스퍼터링 타게트를 제공하는 단계와, D) 제공되어진 이 타게트로부터 DC 마그네트론 스퍼터링 처리를 사용해서 식 SiCx(여기서 x는 1보다 큰 값임)의 실리콘 카바이드로 구성되는 유전체층을 침전시키는 단계와, E) 회토류-전이 금속 합금을 투과한 편광을 반사시키는 데 효과적인 층을 생성하기 위해 종래의 수단으로 반사면을 침전시키는 단계를 구비하는 것을 특징으로 하는 마그네토 광학 기록매체의 제조방법.
  6. 제5항에 있어서, 회토류-전이 금속 합금층은 철, 테르븀 및 코발트로 구성되는 것을 특징으로 하는 마그네토 광학 기록매체의 제조방법.
  7. 제5항에 있어서, 상기 x값은 1.2 이상인 것을 특징으로 하는 마그네토 광학 기록매체의 제조방법.
  8. 제5항에 있어서, 상기 DC 마그네트론 스퍼터링 처리는 불활성 개스의 부분 압력이 0.01torr보다 작을 때 실행되는 것을 특징으로 하는 마그네토 광학 기록매체의 제조방법.
  9. 제5항에 있어서, 상기 DC 마그네트론 스퍼터링 타게트는 실리콘 카바이드와 흑연으로 구성되는 것을 특징으로 하는 마그네토 광학 기록매체의 제조방법.
    ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.
KR1019890001044A 1988-02-01 1989-01-31 실리콘 카바이드 유전체를 가진 마그네토 광학 기록매체 KR890013615A (ko)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US07/150,921 US4917970A (en) 1988-02-01 1988-02-01 Magneto optic recording medium with silicon carbide dielectric
US150,921 1988-02-01

Publications (1)

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KR890013615A true KR890013615A (ko) 1989-09-25

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Country Link
US (1) US4917970A (ko)
EP (1) EP0327257B1 (ko)
JP (1) JPH01251358A (ko)
KR (1) KR890013615A (ko)
DE (1) DE68910338T2 (ko)

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CA2044427C (en) * 1990-06-13 1997-02-11 Junichiro Nakayama Magneto-optical disk and manufacturing methods thereof
US5190631A (en) * 1991-01-09 1993-03-02 The Carborundum Company Process for forming transparent silicon carbide films
US5514468A (en) * 1991-04-17 1996-05-07 Shin-Etsu Chemical Co., Ltd. Magneto-optical recording medium
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Also Published As

Publication number Publication date
DE68910338D1 (de) 1993-12-09
EP0327257A2 (en) 1989-08-09
US4917970A (en) 1990-04-17
EP0327257B1 (en) 1993-11-03
JPH01251358A (ja) 1989-10-06
EP0327257A3 (en) 1990-10-03
DE68910338T2 (de) 1994-05-19

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