KR960011887A - 단파장용 광자기 디스크 - Google Patents

단파장용 광자기 디스크 Download PDF

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Publication number
KR960011887A
KR960011887A KR1019940025200A KR19940025200A KR960011887A KR 960011887 A KR960011887 A KR 960011887A KR 1019940025200 A KR1019940025200 A KR 1019940025200A KR 19940025200 A KR19940025200 A KR 19940025200A KR 960011887 A KR960011887 A KR 960011887A
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KR
South Korea
Prior art keywords
recording layer
layer
optical disk
short
magneto
Prior art date
Application number
KR1019940025200A
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English (en)
Other versions
KR100209285B1 (ko
Inventor
홍현창
Original Assignee
김광호
삼성전자 주식회사
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 김광호, 삼성전자 주식회사 filed Critical 김광호
Priority to KR1019940025200A priority Critical patent/KR100209285B1/ko
Publication of KR960011887A publication Critical patent/KR960011887A/ko
Application granted granted Critical
Publication of KR100209285B1 publication Critical patent/KR100209285B1/ko

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Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording 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
    • G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material
    • G11B7/241—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material
    • G11B7/242—Record 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
    • G11B7/243—Record 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
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B11/00—Recording 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
    • G11B11/10—Recording 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
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording 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
    • G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material
    • G11B7/2403—Layers; Shape, structure or physical properties thereof
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording 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
    • G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material
    • G11B7/241—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material
    • G11B7/242—Record 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
    • G11B7/243—Record 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
    • G11B2007/24302—Metals or metalloids

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  • Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)

Abstract

본 발명은 동화상 정보처리가 가능한 단파장용 광자기 디스크에 관한 것으로, 더욱 구체적으로는 광자기 디스크를 형성하는 기판상에 적층되는 기록층으로서 단파장에서 커(Kerr)회전각이 높은 층 특성을 갖는 경희토류계의 재생층과 수직자화가 용이한 중희토류계의 기록층으로 분리적층 형성시키므로써 각 재생층과 기록층의 상호교환결으로 인해 커 회전각을 배가시켜 높은 자기 광학 특성을 갖게 되며, 자구(domain)크기를 작게하여도 자구를 안정하게 유지할수 있도록 한 것에 관한 것이다.

Description

단파장용 광자기 디스크
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음
제2도는 본 발명에 의한 광자기 디스크의 종단면도.
제3도는 기록층의 두께 변화에 따른 큐리온도의 변화를 도시한 그래프.
제4도는 기록층의 두께 변화에 따른 보자력의 변화를 도시한 그래프.

Claims (5)

  1. 기판(1)상에 유전체층(2)을 적층시킨 후, 기록층(3)으로서 단파장영역에서 커회전각이 높은 2층으로 적층된 재생층(3A, 3B)과 수작자화가 용이한 기록층(3C)으로 분리적층시키며, 그 위에 보호층(4)과 반사층(5)을 차례로 적층시켜서 구성된 고밀도의 단파장용 광자기 디스크에 있어서, 상기 기록층(3)을 형성하는 각 박층(3A-3C)의 전체두께(t1-t3)는 150〈 (t1+ t2+ t3) 〈 300범위인 것을 특징으로 하는 단파장용 광자기 디스크.
  2. 제1항에 있어서, 상기 기록층(3)을 형성하는 각 박층(3A-3C)에서의 보자력(Hc1-Hc3)은 Hc〈2〈 Hc1〈Hc3인 것을 특징으로 하는 단파장용 광자기 디스크.
  3. 제1항에 있어서, 상기 기록층(3)을 형성하는 각 박층(3A-3C)에서의 커 회전각( 1- 3)은 2〉 1〉 3인 것을 특징으로 하는 단파장용 광자기 디스크.
  4. 제1항내지 제3항중 어느 하나의 항에 있어서, 상기 기록층(3)을 형성하는 각 박층(3A-3C)에서의 각 두께는 70/60/70로 형성됨을 특징으로 하는 단파장용 광자기 디스크.
  5. 제1항 내지 제3항중 어느 하나의 항에 있어서, 상기 기록층(3)에서의 재생층(3A, 3B)은 각각 Pr 15%, Tb 13%, Fe 55%, Co 17%과 Nd 15%, Tb 13%, Fe 55%, Co 17%이며, 기록층(3C)은 Tb21%, Fe 70%, Co 9%의 조성비를 갖는 것을 특징으로 하는 단파장용 광자기 디스크.
    ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.
KR1019940025200A 1994-09-30 1994-09-30 단파장용 광자기 디스크 KR100209285B1 (ko)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019940025200A KR100209285B1 (ko) 1994-09-30 1994-09-30 단파장용 광자기 디스크

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019940025200A KR100209285B1 (ko) 1994-09-30 1994-09-30 단파장용 광자기 디스크

Publications (2)

Publication Number Publication Date
KR960011887A true KR960011887A (ko) 1996-04-20
KR100209285B1 KR100209285B1 (ko) 1999-07-15

Family

ID=19394286

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019940025200A KR100209285B1 (ko) 1994-09-30 1994-09-30 단파장용 광자기 디스크

Country Status (1)

Country Link
KR (1) KR100209285B1 (ko)

Also Published As

Publication number Publication date
KR100209285B1 (ko) 1999-07-15

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