KR930008759A - 광자기 기록 방법 및 광자기 메모리 소자 - Google Patents

광자기 기록 방법 및 광자기 메모리 소자 Download PDF

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KR930008759A
KR930008759A KR1019920019244A KR920019244A KR930008759A KR 930008759 A KR930008759 A KR 930008759A KR 1019920019244 A KR1019920019244 A KR 1019920019244A KR 920019244 A KR920019244 A KR 920019244A KR 930008759 A KR930008759 A KR 930008759A
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South Korea
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film
magneto
magnetization
vertical
magnetization film
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KR1019920019244A
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KR960015209B1 (ko
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준지 히로까네
히로유끼 가따야마
쥰이찌로 나까야마
미찌노부 미에다
겐지 오따
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쯔지 하루오
샤프 가부시끼가이샤
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Priority claimed from JP27241491A external-priority patent/JP2859473B2/ja
Priority claimed from JP3277753A external-priority patent/JP2866514B2/ja
Application filed by 쯔지 하루오, 샤프 가부시끼가이샤 filed Critical 쯔지 하루오
Publication of KR930008759A publication Critical patent/KR930008759A/ko
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Publication of KR960015209B1 publication Critical patent/KR960015209B1/ko

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    • 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
    • G11B11/105—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 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
    • G11B11/10582—Record carriers characterised by the selection of the material or by the structure or form
    • G11B11/10584—Record carriers characterised by the selection of the material or by the structure or form characterised by the form, e.g. comprising mechanical protection elements
    • 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
    • G11B11/105—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 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
    • G11B11/10502—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 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 characterised by the transducing operation to be executed
    • G11B11/10504—Recording
    • G11B11/10506—Recording by modulating only the light beam of the transducer
    • 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
    • G11B11/105—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 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
    • G11B11/10502—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 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 characterised by the transducing operation to be executed
    • G11B11/10517—Overwriting or erasing
    • G11B11/10519—Direct overwriting, i.e. performing erasing and recording using the same transducing means
    • 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
    • G11B11/105—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 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
    • G11B11/10582—Record carriers characterised by the selection of the material or by the structure or form
    • G11B11/10586—Record carriers characterised by the selection of the material or by the structure or form characterised by the selection of the material

Abstract

일정한 크기의 외부 자계를 수직 자화막에 대해 수직 방향으로 인가하면서 정보에 따라 광강도를 강약으로 변조한 광 비임을 상기 수직 자화막에 조사해서, 광강도가 강할 때 광 비임이 조사되고 있는 영역의 수직 자화막의 자화 방향을 외부 자계 방향으로 향하게 하고, 광강도가 약할 때 광 비임이 조사되고 있는 영역의 수직 자화막의 자화 방향을 그 영역의 주위 영역의 자화로 생기는 외부자계의 방향과는 반대 방향의 반자계 방향으로 향하게 함으로써 정보를 개서하는 광자기 기록 방법 및 기체상에 수직 자화막과 면내 자화막을 갖는 광자기 메모리 소자가 제공된다. 상기 구성에 따르면 초기화용 자석을 이용하지 않고 광 변조 기록에 의한 중복 기입이 가능하다.

Description

광자기 기록 방법 및 광자기 메모리 소자
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음
제 1 도 내지 제 7 도는 본 발명의 제1실시예를 도시한 것으로, 제 1 도는 본 발명의 광자기 기록 방법의 설명도로, ⒜는 광 비임의 광강도의 시간 변화를 ⒝는 수직 자화막의 자화 상태를 도시한 도면,
제 2 도는 제 1 도의 광자기 기록 방법을 상세히 설명하는 설명도로, ⒜는 광 비임의 광강도의 시간변화를, ⒝ 내지 ⒡는 수직 자화막의 자화 상태를 시간 경과에 따라 나타낸 도면,
제 3 도는 광자기 디스크 장치의 개략 구성도.

Claims (12)

  1. 기체 상에 정보를 기록하는 수직 자화막이 형성된 광자기 메모리 소자를 기록 트랙 방향으로 구동하고, 일정한 크기의 외부 자계를 상기 수직 자화막에 대해 수직 방향으로 인가하면서 정보에 따라 광강도를 강약으로 변조한 광 비임을 상기 수직 자화막에 조사해서, 광강도가 강할 때 광 비임이 조사되고 있는 영역의 수직 자화막의 자화 방향을 외부 자계 방향으로 향하게 하고, 광강도가 약할 때 광 비임이 조사되고 있는 영역의 수직 자화막의 자화 방향을 그 영역의 주위 영역의 자화로 생기는 외부자계의 방향과는 반대 방향의 반자계 방향으로 향하게 함으로써 정보를 개서하는 것을 특징으로 하는 광자기 기록 방법.
  2. 제 1항에 있어서, 상기 광 비임에 의해 수직 자화막 상에 형성되는 광 스폿은 긴 원형으로 되고, 긴 원형의 장축이 기록 트랙에 대략 평행해지도록 세트되어 있는 것을 특징으로 하는 광자기 기록 방법.
  3. 기체 상에 정보를 기록하는 수직 자화막과 상기 수직 자화막의 막면에 대해 수직방향으로 고르게 자화된 바이러스 자성막이 형성된 광자기 메모리 소자를 기록 트랙 방향으로 구동하고, 정보에 따라 광강도를 강약으로 변조한 광 비임을 상기 수직 자화막에 조사해서, 광강도가 강할 때 광 비임이 조사되고 있는 영역의 수직 자화막의 자화 방향을 바이어스 자성막의 자화 방향에 따라 결정되는 방향으로 향하게 하고, 광강도가 약할 때 광 비임이 조사되고 있는 영역의 수직 자화막의 자화 방향을 그 영역 주위의 영역의 자화로 생기는 바이어스 자성막의 자화방향에 따라 결정되는 방향과는 반대 방향인 반자계 방향으로 향하도록 함으로써 정보를 개서하는 것을 특징으로 하는 광자기 기록 방법.
  4. 제 3항에 있어서, 상기 광 비임에 의해 수직 자화막 상에 형성되는 광 스폿은 긴 원형으로 되고, 긴 원형의 장축이 기록 트랙에 대략 평행해지도록 세트되어 있는 것을 특징으로 하는 광자기 기록 방법.
  5. 광 투과성이 있는 기체와, 이 기체상에 형성되고 수직 자화막을 갖는 광자기 기록 매체층과, 광자기 기록 매체층 상에 형성된 제1면내 자화막으로 이루어지는 것을 특징으로 하는 광자기 메모리 소자.
  6. 제 5항에 있어서, 상기기체와 상기 광자기 기록 매체층 사이에 투광성이 있는 제1면재 자화막이 형성되어 있는 것을 특징으로 하는 광자기 메모리 소자.
  7. 제 6항에 있어서, 상기 제1면내 자화막의 막두께는 20nm이하로 설정되어 있는 것을 특징으로 하는 광자기 메모리 소자.
  8. 제 5항 또는 제 6항에 있어서, 광자기 기록 매체층은 제1유전체 막, 수직 자화막, 제2유전체막을 기체측으로부터 차례로 적층하여 구성되어 있는 것을 특징으로 하는 광자기 메모리 소자.
  9. 제 5항 또는 제 6항에 있어서, 광자기 기록 매체층은 제1유전체 막, 수직 자화막, 제2유전체막, 반사막을 기체측으로부터 차례로 적층하여 구성되어 있는 것을 특징으로 하는 광자기 메모리 소자.
  10. 광 투광성이 있는 기체, 제1유전체막, 수직 자화막, 제2면내 자화막, 제2유전체막을 기체측으로부터 차례로 형성하여 구성되는 것을 특징으로 하는 광자기 메모리 소자.
  11. 제10항에 있어서, 상기 제1유전체막과 수직 자화막 사이에 투광성이 있는 제1면내 자화막이 형성되어 있는 것을 특징으로 하는 광자기 메모리 소자.
  12. 제10항 또는 제11항에 있어서, 상기 제2유전체막 상에 반사막이 형성되고, 상기 제2면내 자화막은 투광성을 지니는 것을 특징으로 하는 광자기 메모리 소자.
    ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.
KR1019920019244A 1991-10-21 1992-10-20 광자기 기록 방법 및 광자기 메모리 소자 KR960015209B1 (ko)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP91-272414 1991-10-21
JP27241491A JP2859473B2 (ja) 1991-10-21 1991-10-21 光磁気記録方法
JP3277753A JP2866514B2 (ja) 1991-10-24 1991-10-24 光磁気メモリー素子及びその記録方法
JP91-277753 1991-10-24

Publications (2)

Publication Number Publication Date
KR930008759A true KR930008759A (ko) 1993-05-21
KR960015209B1 KR960015209B1 (ko) 1996-11-01

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KR1019920019244A KR960015209B1 (ko) 1991-10-21 1992-10-20 광자기 기록 방법 및 광자기 메모리 소자

Country Status (5)

Country Link
US (1) US5402408A (ko)
EP (1) EP0539176B1 (ko)
KR (1) KR960015209B1 (ko)
CA (1) CA2080981C (ko)
DE (1) DE69224261T2 (ko)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4305856B2 (ja) * 2005-03-30 2009-07-29 富士通株式会社 熱アシスト磁気記録方法

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4794560A (en) * 1985-09-30 1988-12-27 International Business Machines Corporation Eraseable self biasing thermal magneto-optic medium
US5184335A (en) * 1986-03-07 1993-02-02 Movid Information Technology, Inc. Method and system for erasing previously recorded domains in a magneto-optic recording medium
US5020040A (en) * 1987-06-24 1991-05-28 Digital Equipment Corporation Overwriting system for magneto-optical recording with self timing track
DE3811374A1 (de) * 1988-04-05 1989-10-19 Siemens Ag Datenspeichersystem und verfahren zu seiner herstellung
JP2655682B2 (ja) * 1988-06-08 1997-09-24 株式会社日立製作所 光磁気情報記録再生装置
US5175714A (en) * 1988-09-30 1992-12-29 Kabushiki Kaisha Toshiba Method of magneto-optically recording/erasing information and magneto-optical information storage medium including recording and bias layers satisfying certain conditions
US5142513A (en) * 1989-04-20 1992-08-25 Victor Company Of Japan, Ltd. Magneto-optical storage medium and magneto-optical overwrite system with magnetic characteristic change by variation of thermal condition for recording information
US5087532A (en) * 1989-08-01 1992-02-11 Minnesota Mining And Manufacturing Company Direct-overwrite magneto-optic media
JPH03127347A (ja) * 1989-10-13 1991-05-30 Internatl Business Mach Corp <Ibm> 光磁気記録方法及び装置
JP3015475B2 (ja) * 1990-01-31 2000-03-06 株式会社東芝 光磁気記録方法及びそれに使用される光磁気記録媒体
CA2043995C (en) * 1990-06-13 1997-06-24 Kenji Ohta Magneto-optical recording/reproducing device
JP2972899B2 (ja) * 1991-01-24 1999-11-08 株式会社リコー 光磁気記録方法

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Publication number Publication date
CA2080981C (en) 1999-02-16
EP0539176A2 (en) 1993-04-28
DE69224261T2 (de) 1998-07-23
DE69224261D1 (de) 1998-03-05
CA2080981A1 (en) 1993-04-22
KR960015209B1 (ko) 1996-11-01
EP0539176B1 (en) 1998-01-28
EP0539176A3 (en) 1993-06-09
US5402408A (en) 1995-03-28

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