JPS54145997A - Magnetic recording body and method of producing the same - Google Patents

Magnetic recording body and method of producing the same

Info

Publication number
JPS54145997A
JPS54145997A JP5483978A JP5483978A JPS54145997A JP S54145997 A JPS54145997 A JP S54145997A JP 5483978 A JP5483978 A JP 5483978A JP 5483978 A JP5483978 A JP 5483978A JP S54145997 A JPS54145997 A JP S54145997A
Authority
JP
Japan
Prior art keywords
sheet
aging
recording body
magnetic field
spinodal
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
JP5483978A
Other languages
Japanese (ja)
Inventor
Teruhiko Oshima
Masao Shigeta
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.)
TDK Corp
Original Assignee
TDK 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 TDK Corp filed Critical TDK Corp
Priority to JP5483978A priority Critical patent/JPS54145997A/en
Publication of JPS54145997A publication Critical patent/JPS54145997A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
    • H01F1/01—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials
    • H01F1/03—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity
    • H01F1/032—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials
    • H01F1/04—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials metals or alloys

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Magnetic Record Carriers (AREA)
  • Manufacturing Of Magnetic Record Carriers (AREA)
  • Hard Magnetic Materials (AREA)

Abstract

PURPOSE:To provide a magnetic recording body suitable for high density recording by forming a sheet with a spinodal decomposing structure composed of Cr-Co-Fe at a specified thickness and quenching the sheet with the cooling surface thereof contacting a fusing liquid, followed by aging. CONSTITUTION:A sheet with a spinodal decomposing structure is formed at a thickness of 0.5 to 50mu with a composition of 10 to 35% Cr by weight, 10-35% Co and 30-80% Fe or additionally containing 0.1 to 5% of more than one kind of Mo, Nb, Si and B. The alloy thus made is quenched at a cooling rate of 10<3> deg.C/sec with the cooling surface thereof contacting a fusing liquid. Then, aging is applied to the sheet in the magnetic field to produce a recording body. For example, a sheet 5 is formed through an extremely quick cooling by spraying a fusing liquid A to a copper roll 4 rotating at a high speed. After undergoing a calendar roll, it is subjected to aging in the magnetic field at 640 deg.C for 25 minutes by applying an external magnetic field of 2000 Oe. Thereafter, following aging at 580 deg.C for 2 hours, a magnetic tape is yielded.
JP5483978A 1978-05-09 1978-05-09 Magnetic recording body and method of producing the same Pending JPS54145997A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5483978A JPS54145997A (en) 1978-05-09 1978-05-09 Magnetic recording body and method of producing the same

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5483978A JPS54145997A (en) 1978-05-09 1978-05-09 Magnetic recording body and method of producing the same

Publications (1)

Publication Number Publication Date
JPS54145997A true JPS54145997A (en) 1979-11-14

Family

ID=12981785

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5483978A Pending JPS54145997A (en) 1978-05-09 1978-05-09 Magnetic recording body and method of producing the same

Country Status (1)

Country Link
JP (1) JPS54145997A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56126903A (en) * 1980-03-10 1981-10-05 Tdk Corp Manufacture of magnetic recording body
JPS5961004A (en) * 1982-09-30 1984-04-07 Toshiba Corp Thin strip of permanent magnet and manufacture thereof

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5120446A (en) * 1974-08-10 1976-02-18 Motonosuke Arai DOROTSUGI MESHINSHUKUSOCHINO HOSHUHOHO
JPS526997A (en) * 1975-07-07 1977-01-19 Toshiba Corp Linear magnet manufacture method
JPS52123314A (en) * 1976-04-09 1977-10-17 Denki Jiki Zairiyou Kenkiyuush Production of cendust alloy ribbon

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5120446A (en) * 1974-08-10 1976-02-18 Motonosuke Arai DOROTSUGI MESHINSHUKUSOCHINO HOSHUHOHO
JPS526997A (en) * 1975-07-07 1977-01-19 Toshiba Corp Linear magnet manufacture method
JPS52123314A (en) * 1976-04-09 1977-10-17 Denki Jiki Zairiyou Kenkiyuush Production of cendust alloy ribbon

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56126903A (en) * 1980-03-10 1981-10-05 Tdk Corp Manufacture of magnetic recording body
JPS5961004A (en) * 1982-09-30 1984-04-07 Toshiba Corp Thin strip of permanent magnet and manufacture thereof
JPS6057686B2 (en) * 1982-09-30 1985-12-16 株式会社東芝 Permanent magnetic ribbon and its manufacturing method

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