JPS57138034A - Manufacture for magnetic recording medium - Google Patents

Manufacture for magnetic recording medium

Info

Publication number
JPS57138034A
JPS57138034A JP2410581A JP2410581A JPS57138034A JP S57138034 A JPS57138034 A JP S57138034A JP 2410581 A JP2410581 A JP 2410581A JP 2410581 A JP2410581 A JP 2410581A JP S57138034 A JPS57138034 A JP S57138034A
Authority
JP
Japan
Prior art keywords
heat treatment
polishment
silicon carbide
sputtering method
thin film
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
JP2410581A
Other languages
Japanese (ja)
Inventor
Masatoshi Takao
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 JP2410581A priority Critical patent/JPS57138034A/en
Publication of JPS57138034A publication Critical patent/JPS57138034A/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
    • G11B5/84—Processes or apparatus specially adapted for manufacturing record carriers
    • G11B5/851—Coating a support with a magnetic layer by sputtering

Landscapes

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

Abstract

PURPOSE:To easily manufacture a thin film magnetic recording medium suited to high density recording, by holding a thin film of alloy magnetic substance formed on a nonmagnetic base at a high temperature and causing spinodal decomposition. CONSTITUTION:After forming an alloy magnetic thin film of iron, cobalt. and chromium by a high-frequency sputtering method, heat treatment is made and a prescribed characteristic can be obtained. As a background base, sufficiently polished disc sintered high-purity alumina is used, a silicon carbide film of 20mu thickness is formed on the surface with the sputterming method, and surface polishment is made after heat treatment, and a silicon carbide film is formed further on it by the sputtering method. Next, after heat treatment, surface polishment is made and a silicon carbide film is formed by the sputtering method further on it. After heat treatment is made, sufficiently surface polishment is made.
JP2410581A 1981-02-19 1981-02-19 Manufacture for magnetic recording medium Pending JPS57138034A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2410581A JPS57138034A (en) 1981-02-19 1981-02-19 Manufacture for magnetic recording medium

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2410581A JPS57138034A (en) 1981-02-19 1981-02-19 Manufacture for magnetic recording medium

Publications (1)

Publication Number Publication Date
JPS57138034A true JPS57138034A (en) 1982-08-26

Family

ID=12129061

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2410581A Pending JPS57138034A (en) 1981-02-19 1981-02-19 Manufacture for magnetic recording medium

Country Status (1)

Country Link
JP (1) JPS57138034A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4808463A (en) * 1983-12-27 1989-02-28 Kyocera Corporation Substrate for magnetic disks

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4808463A (en) * 1983-12-27 1989-02-28 Kyocera Corporation Substrate for magnetic disks

Similar Documents

Publication Publication Date Title
JPS5228304A (en) Magnetic recording media
GB1517445A (en) Panel of anisotropic glass ceramic and method for its manufacture
JPS57138034A (en) Manufacture for magnetic recording medium
JPS5633810A (en) Preparation of magnetic recording medium
JPS57167133A (en) Production for magnetic recording medium
JPS5794948A (en) Photomagnetic recording medium
JPS57117123A (en) Magnetic recoding body
JPS5755531A (en) Vertical magnetic recording medium
JPS57181428A (en) Magnetic recording medium and its manufacture
JPS5724022A (en) Production of magnetic recording substance
JPS5737718A (en) Magnetic recording medium
JPS5718029A (en) Production of magnetic disk of high recording density
JPS57147130A (en) Magnetic recording medium
JPS5715279A (en) Manufacture of contiguous disk bubble element
JPS57198535A (en) Magnetic recording medium
JPS55132520A (en) Magnetic head
JPS58164018A (en) Manufacture of vertical magnetic recording medium
JPS57169925A (en) Magnetic recording medium
JPS6482333A (en) Manufacture of magnetic disk
JPS5680105A (en) Bubble magnetic domain element
JPS55108930A (en) Magnetic recording medium and its production
JPS60236118A (en) Production of thin film magnetic recording medium
JPS53133407A (en) Manufacture of high recording density magnetic disc
JPS6241580A (en) Crucible for manufacturing amorphous alloy
JPS5720921A (en) Vertically magnetized recording medium