JPS57109127A - Magnetic recording medium - Google Patents

Magnetic recording medium

Info

Publication number
JPS57109127A
JPS57109127A JP55172382A JP17238280A JPS57109127A JP S57109127 A JPS57109127 A JP S57109127A JP 55172382 A JP55172382 A JP 55172382A JP 17238280 A JP17238280 A JP 17238280A JP S57109127 A JPS57109127 A JP S57109127A
Authority
JP
Japan
Prior art keywords
layer
pillar
magnetic substance
shaped crystal
covered
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.)
Granted
Application number
JP55172382A
Other languages
Japanese (ja)
Other versions
JPS6153770B2 (en
Inventor
Ryuji Sugita
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co Ltd
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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP55172382A priority Critical patent/JPS57109127A/en
Publication of JPS57109127A publication Critical patent/JPS57109127A/en
Publication of JPS6153770B2 publication Critical patent/JPS6153770B2/ja
Granted 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
    • G11B5/65—Record carriers characterised by the selection of the material comprising only the magnetic material without bonding agent characterised by its composition
    • G11B5/656—Record carriers characterised by the selection of the material comprising only the magnetic material without bonding agent characterised by its composition containing Co

Landscapes

  • Thin Magnetic Films (AREA)
  • Magnetic Record Carriers (AREA)

Abstract

PURPOSE:To achieve a magnetic recording medium excellent in the performance of short wave recording and anticorrosion, by forming a magnetic substance layer consisting of Co-Cr or Co-Cr-Ni on a nonmagnetic substance substrate and segregating Cr on the surface of pillar-shaped crystal of this magnetic substance layer. CONSTITUTION:A magnetic substance layer 12 is formed with vacuum deposition, it takes Co and Cr, or Co, Cr and Ni as major component and consists of a pillar-shaped crystal, several 100Angstrom in diameter. The crystal 13 is covered with a layer 14 segregating Cr. With this construction, since the surface of pillar- shaped crystal is covered with a fine inoperative layer due to effect of Cr, far better anticorrosion can be achieved, in comparison with the countermeasures of anticorrosion conventionally such as over coating and forming of inactive layer on the surface of magnetic substance layer. Even if water vapor enters holes 11 and condenses dew, since the surface of pillar-shaped crystal is covered with the inactive layer, almost no corrosion is caused.
JP55172382A 1980-12-05 1980-12-05 Magnetic recording medium Granted JPS57109127A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55172382A JPS57109127A (en) 1980-12-05 1980-12-05 Magnetic recording medium

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55172382A JPS57109127A (en) 1980-12-05 1980-12-05 Magnetic recording medium

Publications (2)

Publication Number Publication Date
JPS57109127A true JPS57109127A (en) 1982-07-07
JPS6153770B2 JPS6153770B2 (en) 1986-11-19

Family

ID=15940869

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55172382A Granted JPS57109127A (en) 1980-12-05 1980-12-05 Magnetic recording medium

Country Status (1)

Country Link
JP (1) JPS57109127A (en)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57170507A (en) * 1981-04-14 1982-10-20 Tdk Corp Magnetic recording media
JPS59185022A (en) * 1983-04-04 1984-10-20 Fuji Photo Film Co Ltd Magnetic recording medium
JPS59220908A (en) * 1983-05-31 1984-12-12 Matsushita Electric Ind Co Ltd Magnetic recording medium and its manufacture
JPS6126926A (en) * 1984-07-17 1986-02-06 Matsushita Electric Ind Co Ltd Magnetic recording medium
JPS61113121A (en) * 1984-11-07 1986-05-31 Hitachi Ltd Vertical magnetic recording medium
WO1986005214A1 (en) * 1985-02-28 1986-09-12 Trimedia Corporation Thin-film storage disk and method
JPS63148411A (en) * 1986-12-12 1988-06-21 Hitachi Ltd Magnetic recording medium
US4753852A (en) * 1985-03-23 1988-06-28 Victor Company Of Japan, Ltd. Magnetic recording medium comprising a magnetic Co-Ni-Cr alloy thin layer
US6183893B1 (en) 1998-04-06 2001-02-06 Hitachi, Ltd. Perpendicular magnetic recording medium and magnetic storage apparatus using the same
US6528149B2 (en) 2000-05-29 2003-03-04 Hitachi, Ltd. Perpendicular-magnetic recording media and magnetic recording apparatus

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0467672U (en) * 1990-10-25 1992-06-16

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5451804A (en) * 1977-09-30 1979-04-24 Shiyunichi Iwasaki Magnetic recording medium
JPS5712423A (en) * 1980-06-26 1982-01-22 Toshiba Corp Production of magnetic recorder

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5451804A (en) * 1977-09-30 1979-04-24 Shiyunichi Iwasaki Magnetic recording medium
JPS5712423A (en) * 1980-06-26 1982-01-22 Toshiba Corp Production of magnetic recorder

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57170507A (en) * 1981-04-14 1982-10-20 Tdk Corp Magnetic recording media
JPS59185022A (en) * 1983-04-04 1984-10-20 Fuji Photo Film Co Ltd Magnetic recording medium
JPS59220908A (en) * 1983-05-31 1984-12-12 Matsushita Electric Ind Co Ltd Magnetic recording medium and its manufacture
JPS6126926A (en) * 1984-07-17 1986-02-06 Matsushita Electric Ind Co Ltd Magnetic recording medium
JPS61113121A (en) * 1984-11-07 1986-05-31 Hitachi Ltd Vertical magnetic recording medium
WO1986005214A1 (en) * 1985-02-28 1986-09-12 Trimedia Corporation Thin-film storage disk and method
US4753852A (en) * 1985-03-23 1988-06-28 Victor Company Of Japan, Ltd. Magnetic recording medium comprising a magnetic Co-Ni-Cr alloy thin layer
JPS63148411A (en) * 1986-12-12 1988-06-21 Hitachi Ltd Magnetic recording medium
US6183893B1 (en) 1998-04-06 2001-02-06 Hitachi, Ltd. Perpendicular magnetic recording medium and magnetic storage apparatus using the same
US6528149B2 (en) 2000-05-29 2003-03-04 Hitachi, Ltd. Perpendicular-magnetic recording media and magnetic recording apparatus
US6641901B2 (en) 2000-05-29 2003-11-04 Hitachi, Ltd. Perpendicular-magnetic recording media and magnetic recording apparatus
US6852398B2 (en) 2000-05-29 2005-02-08 Hitachi, Ltd. Perpendicular-magnetic recording media and magnetic recording apparatus

Also Published As

Publication number Publication date
JPS6153770B2 (en) 1986-11-19

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