KR880013137A - Thermomagnetic recording method - Google Patents

Thermomagnetic recording method Download PDF

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Publication number
KR880013137A
KR880013137A KR1019880004616A KR880004616A KR880013137A KR 880013137 A KR880013137 A KR 880013137A KR 1019880004616 A KR1019880004616 A KR 1019880004616A KR 880004616 A KR880004616 A KR 880004616A KR 880013137 A KR880013137 A KR 880013137A
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KR
South Korea
Prior art keywords
thin film
magnetic thin
magnetic
magnetization
temperature
Prior art date
Application number
KR1019880004616A
Other languages
Korean (ko)
Other versions
KR960011791B1 (en
Inventor
가쯔히사 아라따니
아리요시 나까오끼
도미지 다나까
Original Assignee
오오가 노리오
소니 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.)
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Publication date
Application filed by 오오가 노리오, 소니 가부시끼가이샤 filed Critical 오오가 노리오
Publication of KR880013137A publication Critical patent/KR880013137A/en
Application granted granted Critical
Publication of KR960011791B1 publication Critical patent/KR960011791B1/en

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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
    • 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
    • G11B11/10589—Details
    • G11B11/10591—Details for improving write-in properties, e.g. Curie-point temperature

Abstract

내용 없음No content

Description

열자기 기록방법Thermomagnetic recording method

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.

제1도, 제7도, 제9도, 제11도는 본 발명의 각 실시예의 각 실시예의 자화과정의 설명도, 제2도는 본 발명에 쓰이는 열자기 기록매체의 기본적인 구성도, 제3도는 열자기 기록매체의 구체적인 구조의 일예의 단면도.1, 7, 9, and 11 are explanatory views of the magnetization process of each embodiment of each embodiment of the present invention. Sectional drawing of an example of the specific structure of the magnetic recording medium.

Claims (1)

제1, 및 제2 및 제3의 희토류-천이금속 자성박막이 차례로 자기적으로 결합하여 적층되어 형성되는 열자기 기록매체를 써서, 이열자기 기록매체에 대해서, 막면에 수직방향의 소정의 자계하에서 상기 제1의 자성박막의 거의 큐리온도 Tc1이상으로서 상기 제2의 자성박막의 천이금속의 부격자 자화의 방향을 소정의 방향으로 유지하는 제1의 온도 T1에 의한 제1의 가열상태와, 거의 상기 큐리온도 Tc1이상에서 상기 제2의 자성박막의 천이금속의 부격자 자화의 방향을 상기 소정의 방향과 역방향으로 반전할 수 있는 제2의 온도 T2에 의해 제2의 가열상태를, 기록하려는 정보에 따라 변조하여, 상기 제1 및 제2의 가열상태로 부터의 냉각과정에서 상기 제3의 자성박막에 있어서 부격자 자화는 항상 소정의 방향으로하여 상기 제1의 자성 박막의 부격자 자화의 방향을 반전시키는 일없이 상기 제1의 온도 T1이하로 상기 제2의 자성박막의 부격자 자화를 상기 제3의 자성박막의 부격자 자화와 같은 방향으로 정의되도록 한 것을 특징으로 하는 열자기 기록방법.The first, second and third rare earth-transition metal magnetic thin films are thermally magnetic recording media which are formed by being magnetically bonded and stacked in sequence, and for a dual magnetic recording medium, under a predetermined magnetic field perpendicular to the membrane surface. A first heating state at a first temperature T 1 that maintains the direction of the sublattice magnetization of the transition metal of the second magnetic thin film in a predetermined direction as substantially the Curie temperature Tc 1 or more of the first magnetic thin film; And a second heating state by a second temperature T 2 capable of inverting the direction of the sublattice magnetization of the transition metal of the second magnetic thin film to the opposite direction to the predetermined direction at almost the Curie temperature Tc 1 or more. The sublattice magnetization of the third magnetic thin film in the cooling process from the first and second heating states is always modulated according to the information to be recorded, so that the sub-lattice magnetization of the first magnetic thin film Lattice magnetization Thermal magnetic recording, characterized in that to define in the same direction at a temperature T 1, less than the first, without inverting the direction of the sublattice magnetization of the third magnetic thin film of the sublattice magnetization of the magnetic thin film of the second Way. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019880004616A 1987-04-24 1988-04-23 Thermomagnetic recording method KR960011791B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP101251 1987-04-24
JP62101251A JP2762435B2 (en) 1987-04-24 1987-04-24 Thermomagnetic recording method

Publications (2)

Publication Number Publication Date
KR880013137A true KR880013137A (en) 1988-11-30
KR960011791B1 KR960011791B1 (en) 1996-08-30

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ID=14295693

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019880004616A KR960011791B1 (en) 1987-04-24 1988-04-23 Thermomagnetic recording method

Country Status (2)

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JP (1) JP2762435B2 (en)
KR (1) KR960011791B1 (en)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2505602B2 (en) * 1988-08-24 1996-06-12 三菱電機株式会社 Magneto-optical record carrier and method of manufacturing magneto-optical record carrier
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
JP2503708B2 (en) * 1989-11-14 1996-06-05 三菱電機株式会社 Magneto-optical recording medium and device
JPH0536141A (en) * 1991-07-30 1993-02-12 Sony Corp Magneto-optical recorder
JPH0696468A (en) * 1992-09-14 1994-04-08 Canon Inc Optical recording and reproducing device and semiconductor laser array
JP3183364B2 (en) * 1992-10-12 2001-07-09 キヤノン株式会社 Optical information recording / reproducing method
JP3056902B2 (en) * 1992-11-30 2000-06-26 キヤノン株式会社 Magneto-optical recording medium
US5702793A (en) * 1993-02-25 1997-12-30 Nippon Steel Corporation Magneto-optical recording medium, disk and method of manufacturing the same
JP3244893B2 (en) * 1993-11-26 2002-01-07 キヤノン株式会社 Optical recording / reproducing device
JPH09167388A (en) * 1995-10-11 1997-06-24 Canon Inc Magneto-optical recording medium, information recording and reproducing device using this medium and information recording and reproducing method
JP3529969B2 (en) * 1997-02-26 2004-05-24 株式会社東芝 Multi-level phase change optical recording medium

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63249951A (en) * 1987-04-03 1988-10-17 Mitsubishi Electric Corp Magneto-optical recording information carrier

Also Published As

Publication number Publication date
KR960011791B1 (en) 1996-08-30
JPS63268103A (en) 1988-11-04
JP2762435B2 (en) 1998-06-04

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