KR920005085A - 자기-광기록 재료 및 방법 - Google Patents

자기-광기록 재료 및 방법 Download PDF

Info

Publication number
KR920005085A
KR920005085A KR1019910013835A KR910013835A KR920005085A KR 920005085 A KR920005085 A KR 920005085A KR 1019910013835 A KR1019910013835 A KR 1019910013835A KR 910013835 A KR910013835 A KR 910013835A KR 920005085 A KR920005085 A KR 920005085A
Authority
KR
South Korea
Prior art keywords
medium
magnetic
temperature
optical recording
magnetized
Prior art date
Application number
KR1019910013835A
Other languages
English (en)
Other versions
KR960013493B1 (ko
Inventor
아쯔시 마에다
Original Assignee
아까바 노부히사
신기슈쯔지교오단
원본미기재
산요덴끼 가부시끼가이샤
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 아까바 노부히사, 신기슈쯔지교오단, 원본미기재, 산요덴끼 가부시끼가이샤 filed Critical 아까바 노부히사
Publication of KR920005085A publication Critical patent/KR920005085A/ko
Application granted granted Critical
Publication of KR960013493B1 publication Critical patent/KR960013493B1/ko

Links

Classifications

    • 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
    • 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
    • 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
    • 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

내용 없음

Description

자기-광기록 재료 및 방법
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음
제3도는 본 발명에 따른 Dy-yb 자기-광 박막의 개략횡단면도이며,
제4도는 자화 동결의 존재를 입증하고, Dy(40A)/Yb(40A)(Dy-Yb층의 25주기)의 박막에 대해 관찰된 특징적인 자화-온도 움직임을 나타내며,
제5A도 내지 제5C도는 다른 온도에 대한 Dy(40A)/Yb(40A)(Dy-Yb층의 25주기)의 박막의 가역 자기-광특성을 나타내며.

Claims (5)

  1. 자성희토류금속(11)과 도전성 물질(12)의 층을 교호로 하여된 다층구조를 가짐과 동시에 자기 동결상태를 가지며, 베이스로 된 기록/소거를 위해 그 온도를 제어함으로써 비자화되고, 강자성으로의 임의 정도까지 자화될 수 있는자기 광 매체.
  2. 자성희토류금속(11)과 도전성 물질(12)의 층을 교호로 하여된 자기 광기록 매체를 사용하여, 상기 매체의 표면과 대략 수직방향으로의 자장을 인가하는 공정과, 주어진 온도 영역내에서 임의 선택된 온도로 상기 자장내에서 상기매체를 가열하도록 매체상에 레이저 광의 비임을 조사하는 공정으로 이루어지고, 상기 매체가 자기동결상태로부터 강자기 상태까지 자화될 수 있는 자기 광 기록방법.
  3. 제2항에 있어서, 상기 레이저 광 비임의 파우어는, 기록하는 동안 매체의 온도가 다양한 자화도를 발생시키도록 변화하고 이에 의하여 다중기록을 제공할 수 있는 상기 매체를 가열하여 제어되는 자기 광 기록방법.
  4. 자성희토류금속(11)과 도전성 물질(12)의 층을 교호로 하여된 자기 광기록 매체상에 기록된 정보를 소거하기 위하여, 상기 매체상에 자장을 인가하지 않는 공정과, 상기 기록시 사용되는 온도보다 높은 온도까지 상기 매체를 가열하도록 매체상에 레이저 광의 비임을 조사하는 공정으로 이루어지고, 상기매체가 강자기 상태로 부터 자기 동결상태까지 자화되는 자기 광 기록방법.
  5. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.
KR1019910013835A 1990-08-10 1991-08-10 광자기 기록매체 및 그의 기록방법 KR960013493B1 (ko)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP21041090 1990-08-10
JP90-210410 1990-08-10

Publications (2)

Publication Number Publication Date
KR920005085A true KR920005085A (ko) 1992-03-28
KR960013493B1 KR960013493B1 (ko) 1996-10-05

Family

ID=16588857

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019910013835A KR960013493B1 (ko) 1990-08-10 1991-08-10 광자기 기록매체 및 그의 기록방법

Country Status (4)

Country Link
US (1) US5432761A (ko)
EP (1) EP0470862B1 (ko)
KR (1) KR960013493B1 (ko)
DE (1) DE69118273T2 (ko)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4320514A1 (de) * 1993-06-22 1995-01-05 Forschungszentrum Juelich Gmbh Neues optisches Schreibverfahren und Schichtsystem für magnetooptische Datenspeicher
EP0762410A4 (en) * 1994-05-10 1998-01-07 Hitachi Maxell MAGNETOOPIC RECORDING MEDIUM, RECORDING AND PLAYBACK METHOD AND DEVICE
US20130093419A1 (en) * 2010-06-11 2013-04-18 Agency For Science, Technology And Research Method and apparatus for determining thermal magnetic properties of magnetic media

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0670858B2 (ja) * 1983-05-25 1994-09-07 ソニー株式会社 光磁気記録媒体とその製法
FR2560419B1 (fr) * 1984-02-29 1986-06-13 Bull Sa Milieu d'enregistrement magneto-optique
JPH06105507B2 (ja) * 1984-10-26 1994-12-21 日本電気株式会社 光磁気記録再生消去装置
US4922454A (en) * 1984-10-30 1990-05-01 Brother Kogyo Kabushiki Kaisha Magneto-optical memory medium and apparatus for writing and reading information on and from the medium
CA1254385A (en) * 1985-07-26 1989-05-23 Noboru Sato Magneto-optical recording medium having amorphous artificially layered structure of rare earth element and transition metal element
EP0263380A3 (de) * 1986-10-08 1990-02-28 Siemens Aktiengesellschaft Verfahren zur Herstellung eines magnetooptischen Aufzeichnungsmediums
DE68920828T2 (de) * 1988-11-18 1995-09-07 Japan Res Dev Corp Magnetooptisches Aufzeichnungsmedium und dessen Aufzeichnungsverfahren.

Also Published As

Publication number Publication date
DE69118273D1 (de) 1996-05-02
EP0470862A1 (en) 1992-02-12
KR960013493B1 (ko) 1996-10-05
US5432761A (en) 1995-07-11
DE69118273T2 (de) 1996-11-21
EP0470862B1 (en) 1996-03-27

Similar Documents

Publication Publication Date Title
KR870006528A (ko) 광자기 기록 시스템
CA2100898A1 (en) Magneto-optical recording medium and method of recording and reproducingusing thereof
JPS6280847A (ja) 磁気記憶媒体
US4466004A (en) Thermomagnetic recording
KR930003043A (ko) 광자기기록방식 및 이 방식에 사용되는 광자기기록매체
KR950010421B1 (ko) 직접 겹쳐쓸 수 있는 자기-광학 기록방법 및 장치
KR950004150A (ko) 광-자기 기록 매체
KR940018813A (ko) 광자기 기록 매체 및 그 기록 방법과 기록 재생 방법 (Optomagnetic Recording Medium, and Method for Recording and Reproducing threreto)
KR910005257A (ko) 직접 오버라이트 기능을 갖는 자기 광학 기록 매체
JPS5724046A (en) Photoelectric recording medium and its recorer and reproducer
KR920005085A (ko) 자기-광기록 재료 및 방법
KR940016058A (ko) 광자기 기록 방법
KR920001459A (ko) 광자기 기록 재생방법 및 광자기 기록 재생장치
JPS56143547A (en) Magnetooptical storage disk
KR940007797A (ko) 오버라이트가능한 광기록 매체 및 그의 기록 방법
JPH03266243A (ja) 光磁気記録方法
JP2945049B2 (ja) 光磁気記録媒体
JP2941486B2 (ja) 光磁気記録媒体
JP2757560B2 (ja) 光磁気記録媒体
JPH01171137A (ja) 光磁気記録媒体
JPH03119540A (ja) 光磁気記録媒体
JPH03209649A (ja) 光磁気記録媒体
JPH06162586A (ja) 光磁気記録媒体及び光磁気記録方法、並びに光磁気記録媒体の製造方法
JPH03212832A (ja) 光磁気記録媒体及びその情報記録方法
JPS63237242A (ja) 光磁気記録方式

Legal Events

Date Code Title Description
AMND Amendment
A201 Request for examination
E902 Notification of reason for refusal
AMND Amendment
E601 Decision to refuse application
J2X1 Appeal (before the patent court)

Free format text: APPEAL AGAINST DECISION TO DECLINE REFUSAL

E902 Notification of reason for refusal
G160 Decision to publish patent application
B701 Decision to grant
GRNT Written decision to grant
FPAY Annual fee payment

Payment date: 19990408

Year of fee payment: 6

LAPS Lapse due to unpaid annual fee