JPS57176531A - Magnetic recording medium - Google Patents

Magnetic recording medium

Info

Publication number
JPS57176531A
JPS57176531A JP56061871A JP6187181A JPS57176531A JP S57176531 A JPS57176531 A JP S57176531A JP 56061871 A JP56061871 A JP 56061871A JP 6187181 A JP6187181 A JP 6187181A JP S57176531 A JPS57176531 A JP S57176531A
Authority
JP
Japan
Prior art keywords
nonmagnetic support
alloy
vertical
film
magnetization
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
JP56061871A
Other languages
Japanese (ja)
Inventor
Hirotsugu Takagi
Ikuaki Yamagata
Hiroyoshi Kishi
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.)
Canon Inc
Original Assignee
Canon Inc
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 Canon Inc filed Critical Canon Inc
Priority to JP56061871A priority Critical patent/JPS57176531A/en
Publication of JPS57176531A publication Critical patent/JPS57176531A/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
    • G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/62—Record carriers characterised by the selection of the material
    • G11B5/64—Record carriers characterised by the selection of the material comprising only the magnetic material without bonding agent
    • G11B5/66—Record carriers characterised by the selection of the material comprising only the magnetic material without bonding agent the record carriers consisting of several layers
    • G11B5/676—Record carriers characterised by the selection of the material comprising only the magnetic material without bonding agent the record carriers consisting of several layers having magnetic layers separated by a nonmagnetic layer, e.g. antiferromagnetic layer, Cu layer or coupling layer

Landscapes

  • Magnetic Record Carriers (AREA)

Abstract

PURPOSE:To achieve a vertical magnetism recording medium having vertical magnetization film excellent in flatness and vertical orientation, by removing the 1st nonmagnetic support after forming a Co-Cr alloy film, a high-permeability in-surface magnetization layer and the 2nd nonmagnetic support in order on the 1st nonmagnetic support. CONSTITUTION:A thin film 2 of Co-Cr alloy in which the magnetization easy axis is vertical to the film surface is formed on a nonmagnetic support 1 such as high polymer film, and after forming a high permeability in-surface magnetization layer 3 such as Fe-Ni alloy, Fe-Al-Si alloy, amorphous high permeability material and high permeability ferrite, a nonmagnetic support 4 is formed. The objective vertical magnetization recording medium is obtained by finally removing the 1st nonmagnetic support 1. Thus, the flatness of the surface of the Co-Cr alloy thin film 2 can be made to the same degree as that on the surface of the 1st nonmagnetic support 1, and the contact performance with magnetic heads can be improved.
JP56061871A 1981-04-23 1981-04-23 Magnetic recording medium Pending JPS57176531A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56061871A JPS57176531A (en) 1981-04-23 1981-04-23 Magnetic recording medium

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56061871A JPS57176531A (en) 1981-04-23 1981-04-23 Magnetic recording medium

Publications (1)

Publication Number Publication Date
JPS57176531A true JPS57176531A (en) 1982-10-29

Family

ID=13183613

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56061871A Pending JPS57176531A (en) 1981-04-23 1981-04-23 Magnetic recording medium

Country Status (1)

Country Link
JP (1) JPS57176531A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1134731A2 (en) * 2000-03-16 2001-09-19 Toda Kogyo Corporation Discrete magnetic thin film elements having perpendicular magnetization
WO2003083842A1 (en) * 2002-03-28 2003-10-09 Anelva Corporation Vertical magnetic recording medium, magnetic recorder having same, vertical magnetic recording medium manufacturing method, and vertical magnetic recording medium manufacturing apparatus

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1134731A2 (en) * 2000-03-16 2001-09-19 Toda Kogyo Corporation Discrete magnetic thin film elements having perpendicular magnetization
EP1134731A3 (en) * 2000-03-16 2002-05-29 Toda Kogyo Corporation Discrete magnetic thin film elements having perpendicular magnetization
WO2003083842A1 (en) * 2002-03-28 2003-10-09 Anelva Corporation Vertical magnetic recording medium, magnetic recorder having same, vertical magnetic recording medium manufacturing method, and vertical magnetic recording medium manufacturing apparatus

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