KR920008685A - 자기-광 기록 매체 - Google Patents

자기-광 기록 매체 Download PDF

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Publication number
KR920008685A
KR920008685A KR1019910016856A KR910016856A KR920008685A KR 920008685 A KR920008685 A KR 920008685A KR 1019910016856 A KR1019910016856 A KR 1019910016856A KR 910016856 A KR910016856 A KR 910016856A KR 920008685 A KR920008685 A KR 920008685A
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KR
South Korea
Prior art keywords
group
element selected
film
transition metal
magneto
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Application number
KR1019910016856A
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English (en)
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KR950005036B1 (ko
Inventor
히데오 이이요리
신지 다까야마
Original Assignee
원본미기재
인터내셔널 비지네스 머신즈 코포레이션
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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Application filed by 원본미기재, 인터내셔널 비지네스 머신즈 코포레이션 filed Critical 원본미기재
Publication of KR920008685A publication Critical patent/KR920008685A/ko
Application granted granted Critical
Publication of KR950005036B1 publication Critical patent/KR950005036B1/ko

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    • 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
    • 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
    • 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

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  • Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Thin Magnetic Films (AREA)

Abstract

내용 없음

Description

자기-광 기록 매체
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음
제1도는 자기-광 기록매체의 일반 구성의 횡단면도,
제2도는 TbFeCo/NdCo/TdFeCo 삼층 필름에 있어서 제1층의 두께와 케르 회전각 사이의 관련성을 도시하는 그래프,
제3도는 제2도 삼층 필름의 케르 자기 이력 곡선의 한 예를 도시하는 그래프.

Claims (5)

  1. Tb, Dy및 Gd로 구성된 그룹에서 선택된 적어도 하나의 전이 금속 원소를 포함하고 Fe 및 Co로 구성된 그룹에서 선택된 적어도 하나의 전이 금속 원소를 포함하는 희토류 전이 금속 비결정질 필름 형태로서 두께가 1nm이상 20nm이하인 제1자기층과, Nd 및 Pr로 구성된 구룹에서 선택된 적어도 하나의 희토류 원소를 포함하고 Fe 및 Co로 구성된 구룹에서 선택된 적어도 하나의 전이 금속 원소를 포함하는 희토류 전이 금속 비결정질 필름이나 Fe및 Co로 구성된 구룹에서 선택된 적어도 하나의 원소를 포함하는 결정질 필름 형태로서 두께가 1nm이상 20nm이하인 제2자기층과, Tb, Dy 및 Gd로 구성된 그룹에서 선택된 적어도 하나의 희토류 원소를 포함하고 Fe 및 Co로 구성된 그룹에서 선택된 적어도 하나의 전이 금속 원소를 포함하는 희토류 전이 금속 비결정질 필름형태로서 두께가 2nm이상인 3자기층을 가지며, 상기 자기층들은 제1층이 광에 의해 첫번재로 투과되도록 연속해서 얇게 형성되는 것을 특징으로 하는 자기-광 매체.
  2. 제1항에 있어서, 상기 제2층은 화학식(Al-Ba)x(Fel-bCob)yTz으로 나타내며, 여기서 A는 Nd 및 Pr로 구성된 그룹에서 선택된 적어도 하나의 원소이며, B는 Tb, Dy및 Gd로 구성된 구룹에서 선택된 적어도 하나의 원소이며, T 는 내식성을 향상시키도록 전이 금속의 그룹에서 선택된 적어도 하나의 원소이며, 0a0.9, 0b1, 0x40, 0x10, x+y+z=100 인 것을 특징으로 하는 자기-광 매체.
  3. 제1항 또는 제2항에 있어서, 상기 제2자기층은 TbFeCo필름, GdTbFeCo필름, DyTbFeCo필름, DyFeCo필름 또는 DyGdFeCo필름인 것을 특징으로 하는 자기-광 매체.
  4. 제1항 또는 제2항에 있어서, 상기 제1및 제3자기층은 내식성을 향상시키도록 전이 금속의 그룹에서 선택된 적어도 하나의 원소를 포함하는 것을 특징으로 하는 자기-광 매체.
  5. 제1항 또는 제2항에 있어서, 내식성을 향상시키기 위한 전이 금속의 그룹은 Ti, Zr, V, Nb, Ta, Cr, Mo, W, Pd, Pt, Au및 Al로 구성되는 것을 특징으로 하는 자기-광 매체.
    ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.
KR1019910016856A 1990-10-05 1991-09-27 자기-광 기록매체 KR950005036B1 (ko)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP90-266606 1990-10-05
JP2266606A JPH0690976B2 (ja) 1990-10-05 1990-10-05 光磁気記録媒体

Publications (2)

Publication Number Publication Date
KR920008685A true KR920008685A (ko) 1992-05-28
KR950005036B1 KR950005036B1 (ko) 1995-05-17

Family

ID=17433152

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019910016856A KR950005036B1 (ko) 1990-10-05 1991-09-27 자기-광 기록매체

Country Status (9)

Country Link
US (1) US5173885A (ko)
EP (1) EP0479474B1 (ko)
JP (1) JPH0690976B2 (ko)
KR (1) KR950005036B1 (ko)
CN (1) CN1022872C (ko)
CA (1) CA2051603C (ko)
DE (1) DE69115426D1 (ko)
HK (1) HK72096A (ko)
MY (1) MY131057A (ko)

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2733127B2 (ja) * 1990-08-07 1998-03-30 シャープ株式会社 光磁気記録装置
DE4103854A1 (de) * 1991-02-08 1992-08-27 Thomson Brandt Gmbh Optische abtastvorrichtung
WO1993010530A1 (en) * 1991-11-22 1993-05-27 Seiko Epson Corporation Magnetooptical recording media
JPH05282723A (ja) * 1992-03-31 1993-10-29 Matsushita Electric Ind Co Ltd 光磁気ヘッド装置
JPH06162583A (ja) * 1992-11-19 1994-06-10 Canon Inc 光磁気記録媒体
US5631559A (en) * 1993-03-05 1997-05-20 Northeastern University Method and apparatus for performing magnetic field measurements using magneto-optic kerr effect sensors
DE4321851A1 (de) * 1993-07-01 1995-01-12 Philips Patentverwaltung Magnetooptisches Aufzeichnungsmedium
CA2127059A1 (en) * 1993-07-02 1995-01-03 Masahiko Sekiya Magneto-optical recording medium
JP2912154B2 (ja) * 1994-03-24 1999-06-28 シャープ株式会社 磁気光学記録媒体およびその製造方法
JP2005222669A (ja) 2004-01-05 2005-08-18 Fujitsu Ltd 磁気記録媒体および磁気記憶装置
US7191955B2 (en) * 2004-12-22 2007-03-20 Norman Ivans Irrigation unit having a control system that performs a self-test and a cleaner that cleans the unit
US7097113B2 (en) * 2004-01-20 2006-08-29 Norman Ivans Irrigation unit including a power generator
US7458521B2 (en) * 2004-10-30 2008-12-02 Norman Ivans Irrigation unit having a control system and a data storage unit
US7617992B2 (en) * 2004-10-30 2009-11-17 Norman Ivans System and method for maintaining irrigation accuracy of an irrigation system
US7349763B2 (en) * 2004-10-30 2008-03-25 Norman Ivans System and method for systematically irrigating subregions of an irrigation region
US7708206B2 (en) * 2004-12-22 2010-05-04 Norman Ivans Irrigation unit including a nozzle having greater accuracy and improved adjustment properties
ITMI20110803A1 (it) * 2011-05-10 2012-11-11 Claber Spa Impianto di irrigazione a controllo remoto.
KR102391800B1 (ko) * 2018-06-15 2022-04-29 주식회사 엘지화학 비정질 박막의 제조방법

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6066349A (ja) * 1983-09-22 1985-04-16 Agency Of Ind Science & Technol 光熱磁気記録媒体およびその製造方法
US4871614A (en) * 1986-07-09 1989-10-03 Canon Kabushiki Kaisha Opto-magnetic recording medium having three exchange-coupled magnetic layers
JPS63249951A (ja) * 1987-04-03 1988-10-17 Mitsubishi Electric Corp 光磁気記録情報担体
JPH01237945A (ja) * 1988-03-18 1989-09-22 Canon Inc 光磁気記録媒体
JP2701403B2 (ja) * 1988-12-29 1998-01-21 ソニー株式会社 光磁気デイスク装置
JP2646398B2 (ja) * 1989-09-20 1997-08-27 インターナシヨナル・ビジネス・マシーンズ・コーポレーシヨン 光磁気記録媒体

Also Published As

Publication number Publication date
HK72096A (en) 1996-05-03
JPH0690976B2 (ja) 1994-11-14
EP0479474A3 (en) 1993-02-24
EP0479474A2 (en) 1992-04-08
CA2051603A1 (en) 1992-04-06
MY131057A (en) 2007-07-31
EP0479474B1 (en) 1995-12-13
JPH04150010A (ja) 1992-05-22
CN1061298A (zh) 1992-05-20
CA2051603C (en) 1995-09-12
CN1022872C (zh) 1993-11-24
KR950005036B1 (ko) 1995-05-17
US5173885A (en) 1992-12-22
DE69115426D1 (de) 1996-01-25

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