WO1995034885A3 - Magneto-optical recording medium - Google Patents

Magneto-optical recording medium Download PDF

Info

Publication number
WO1995034885A3
WO1995034885A3 PCT/IB1995/000430 IB9500430W WO9534885A3 WO 1995034885 A3 WO1995034885 A3 WO 1995034885A3 IB 9500430 W IB9500430 W IB 9500430W WO 9534885 A3 WO9534885 A3 WO 9534885A3
Authority
WO
WIPO (PCT)
Prior art keywords
layer
recording medium
optical recording
magneto
magnetic
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/IB1995/000430
Other languages
French (fr)
Other versions
WO1995034885A2 (en
Inventor
Pascal Jean Henri Bloemen
De Stegge Johannes Bernard Aan
Der Zaag Pieter Jan Van
Ronald Martin Wolf
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Koninklijke Philips NV
Philips Norden AB
Original Assignee
Philips Electronics NV
Philips Norden AB
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 Philips Electronics NV, Philips Norden AB filed Critical Philips Electronics NV
Priority to EP95918708A priority Critical patent/EP0713598A1/en
Priority to JP8501879A priority patent/JPH09501790A/en
Publication of WO1995034885A2 publication Critical patent/WO1995034885A2/en
Publication of WO1995034885A3 publication Critical patent/WO1995034885A3/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S428/00—Stock material or miscellaneous articles
    • Y10S428/90—Magnetic feature
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24942—Structurally defined web or sheet [e.g., overall dimension, etc.] including components having same physical characteristic in differing degree
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/26—Web or sheet containing structurally defined element or component, the element or component having a specified physical dimension
    • Y10T428/263—Coating layer not in excess of 5 mils thick or equivalent
    • Y10T428/264—Up to 3 mils
    • Y10T428/265—1 mil or less

Abstract

A magneto optical recording medium (2) comprising a substrate (4) and a recording layer (6), the recording layer (6) comprising a bilayer structure consisting of a first layer (8) on which a magnetic second layer (10) is deposited, the second layer (10) demonstrating perpendicular magnetic anisotropy and a saturation remanence of at least 90 %, whereby the magnetic material of the second layer (10) comprises an oxide of iron, and the first layer (8) comprises an oxidic material whose in-plane lattice parameter differs from that of the magnetic material, the growth of the second layer (10) upon the first layer (8) being at least locally epitaxial.
PCT/IB1995/000430 1994-06-09 1995-06-06 Magneto-optical recording medium Ceased WO1995034885A2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP95918708A EP0713598A1 (en) 1994-06-09 1995-06-06 Magneto-optical recording medium
JP8501879A JPH09501790A (en) 1994-06-09 1995-06-06 Magneto-optical recording medium

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP94201646.0 1994-06-09
EP94201646 1994-06-09

Publications (2)

Publication Number Publication Date
WO1995034885A2 WO1995034885A2 (en) 1995-12-21
WO1995034885A3 true WO1995034885A3 (en) 1996-01-18

Family

ID=8216933

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB1995/000430 Ceased WO1995034885A2 (en) 1994-06-09 1995-06-06 Magneto-optical recording medium

Country Status (4)

Country Link
US (1) US5695863A (en)
EP (1) EP0713598A1 (en)
JP (1) JPH09501790A (en)
WO (1) WO1995034885A2 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4093681B2 (en) * 1999-05-26 2008-06-04 シャープ株式会社 Thermomagnetic recording medium, thermomagnetic recording method, thermomagnetic reproducing method, thermomagnetic recording / reproducing apparatus
US20020152953A1 (en) * 2001-04-23 2002-10-24 Chambers Scott A. Spinel-structured metal oxide on a substrate and method of making same by molecular beam epitaxy
US20050078922A1 (en) * 2002-07-18 2005-04-14 Sanders Eugene Turner Electrical cable with temperature sensing means and method of manufacture
US8508006B2 (en) * 2011-05-10 2013-08-13 Magic Technologies, Inc. Co/Ni multilayers with improved out-of-plane anisotropy for magnetic device applications
WO2013027354A1 (en) * 2011-08-25 2013-02-28 パナソニック株式会社 Bonded body, power semiconductor device and method for manufacturing bonded body and power semiconductor device

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL8203725A (en) * 1982-09-27 1984-04-16 Philips Nv THERMO-MAGNETO-OPTICAL MEMORY DEVICE AND RECORD MEDIUM FOR THAT.
JPS59168950A (en) * 1983-03-17 1984-09-22 Ricoh Co Ltd magneto-optical recording medium
CA1235808A (en) * 1984-03-22 1988-04-26 Tetsuo Oka Vertical magnetic recording medium and process for preparation thereof
US4690861A (en) * 1985-03-11 1987-09-01 Ricoh Co., Ltd. Magneto optical recording medium
FR2584847B1 (en) * 1985-07-15 1987-10-16 Bull Sa MAGNETICALLY ANISOTROPIC PERPENDICULAR RECORDING MEDIUM
US4975324A (en) * 1986-10-21 1990-12-04 Matsushita Electric Industrial Co., Ltd. Perpendicular magnetic film of spinel type iron oxide compound and its manufacturing process
EP0443478A3 (en) * 1990-02-19 1992-03-11 Kanegafuchi Kagaku Kogyo Kabushiki Kaisha Magnetic recording medium and method for preparing the same
EP0461834A2 (en) * 1990-06-11 1991-12-18 Matsushita Electric Industrial Co., Ltd. A magnetic recording medium and its manufacturing process
JPH05242537A (en) * 1992-02-28 1993-09-21 Matsushita Electric Ind Co Ltd Magneto-optical recording medium

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
EBISAWA T. ET AL: "PROPERTIES OF COFE2O4 FILMS PREPARED BY ANNEALING CO/FE MULTILAYERED FILMS IN THE ATMOSPHERE", IEEE TRANSLATION JOURNAL ON MAGNETICS IN JAPAN, vol. 7, no. 1, 1992, NEW YORK, US, pages 88 - 94, XP000267479 *
KRUMME J.P. ET AL: "Optical recording aspects of rf magnetron-sputtered iron-garnet films", JOURNAL OF APPLIED PHYSICS, vol. 66, no. 9, November 1989 (1989-11-01), pages 4393 - 4407 *

Also Published As

Publication number Publication date
JPH09501790A (en) 1997-02-18
EP0713598A1 (en) 1996-05-29
US5695863A (en) 1997-12-09
WO1995034885A2 (en) 1995-12-21

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