KR920005085A - 자기-광기록 재료 및 방법 - Google Patents
자기-광기록 재료 및 방법 Download PDFInfo
- 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
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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
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)
- 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.
- 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.
- 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.
- 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.
- ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.
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)
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)
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. |
-
1991
- 1991-08-09 DE DE69118273T patent/DE69118273T2/de not_active Expired - Fee Related
- 1991-08-09 EP EP91307364A patent/EP0470862B1/en not_active Expired - Lifetime
- 1991-08-10 KR KR1019910013835A patent/KR960013493B1/ko not_active IP Right Cessation
-
1993
- 1993-12-17 US US08/169,744 patent/US5432761A/en not_active Expired - Fee Related
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 |
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