JPS6442040A - Information recording medium - Google Patents

Information recording medium

Info

Publication number
JPS6442040A
JPS6442040A JP19751887A JP19751887A JPS6442040A JP S6442040 A JPS6442040 A JP S6442040A JP 19751887 A JP19751887 A JP 19751887A JP 19751887 A JP19751887 A JP 19751887A JP S6442040 A JPS6442040 A JP S6442040A
Authority
JP
Japan
Prior art keywords
recording layers
layers
recording
reproducing
magnetic layer
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.)
Pending
Application number
JP19751887A
Other languages
Japanese (ja)
Inventor
Ryutaro Tanaka
Tetsuo Saito
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
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 Toshiba Corp filed Critical Toshiba Corp
Priority to JP19751887A priority Critical patent/JPS6442040A/en
Publication of JPS6442040A publication Critical patent/JPS6442040A/en
Pending 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
    • G11B11/10589—Details

Landscapes

  • Thin Magnetic Films (AREA)
  • Physical Vapour Deposition (AREA)

Abstract

PURPOSE:To obtain good recording characteristics and reproducing characteristics by alternately laminating specific recording layers and reproducing layers plural times, thereby forming a magnetic layer. CONSTITUTION:The magnetic layer 20 is formed by alternately laminating the recording layers 14 and the recording layers 13 plural times. The recording layers 14 and the recording layers 13 have the compsn. expressed by Mn1-x-yAxDy. The recording layers 14 are crystalline and the reproducing layers 13 are mainly amorphous. In the formula, A denotes at least one kind of the element selected from Al, Ga, In, Sb, Bi, Te, Se, Sn, Pb, and As; D denotes at least one kind of the element selected from Ge, Si, C, B, P, Cu, Zn, Ti, and Pt; (x), (y) are respectively in 0.1<=x<=0.6, 0.1<=y<=0.6 ranges. The magnetic layer which are outstanding in both the recording characteristics and reproducing characteristics is thereby obtd. and the high stability and good environmental resistance are obtd.
JP19751887A 1987-08-07 1987-08-07 Information recording medium Pending JPS6442040A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP19751887A JPS6442040A (en) 1987-08-07 1987-08-07 Information recording medium

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP19751887A JPS6442040A (en) 1987-08-07 1987-08-07 Information recording medium

Publications (1)

Publication Number Publication Date
JPS6442040A true JPS6442040A (en) 1989-02-14

Family

ID=16375798

Family Applications (1)

Application Number Title Priority Date Filing Date
JP19751887A Pending JPS6442040A (en) 1987-08-07 1987-08-07 Information recording medium

Country Status (1)

Country Link
JP (1) JPS6442040A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0311703A (en) * 1989-05-31 1991-01-21 Internatl Business Mach Corp <Ibm> Magnetic substance and manufacture thereof
GB2486167A (en) * 2010-12-01 2012-06-13 Trinity College Dublin Magnetic recording medium with manganese-gallium alloy recording layer

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0311703A (en) * 1989-05-31 1991-01-21 Internatl Business Mach Corp <Ibm> Magnetic substance and manufacture thereof
GB2486167A (en) * 2010-12-01 2012-06-13 Trinity College Dublin Magnetic recording medium with manganese-gallium alloy recording layer

Similar Documents

Publication Publication Date Title
EP1376563A3 (en) Optical data recording medium and recording method
EP0969457A3 (en) Sputtering target, method of producing the target and method of fabricating an optical recording medium
KR890001037A (en) How to record and delete information
CA2368171A1 (en) Information recording medium and method for manufacturing the same
EP1669207A4 (en) Information recording medium
EP0261240A4 (en) Magnetic recording medium.
EP0223050A3 (en) Fine isometric hexaferrite pigments, process for preparing same and use thereof
JPS6442040A (en) Information recording medium
JPS6435746A (en) Information recording medium
DE3882498D1 (en) METAL OXIDE MATERIAL.
EP0595636A2 (en) Magneto-optical recording medium
EP0731460A2 (en) Optical data recording medium and material for heat-resistant protection layer for the same
EP0387016A3 (en) Optical recording media
JPS5360205A (en) Magnetic recording medium and its manufacture
JPS6425329A (en) Information recording medium
JPS6425330A (en) Information recording medium
JPS56130394A (en) Recording material for information
WO1993008981A3 (en) Layered crystalline material capable of high guest loading
JPS57198606A (en) Magnetic recording medium
Kobayashi Perpendicular Magnetic Recording Medium Using the Continuous Sputtering System
KR870002554A (en) High density magnetic recording magnetic component and magnetic recording medium using the same
JPS6433709A (en) Magnetic head
JPS6443824A (en) Optical information recording medium
JP2001101712A5 (en) Information recording medium
KR890008768A (en) Recording medium for optical disc