JPS5771526A - Production of magnetic recording medium - Google Patents

Production of magnetic recording medium

Info

Publication number
JPS5771526A
JPS5771526A JP55147189A JP14718980A JPS5771526A JP S5771526 A JPS5771526 A JP S5771526A JP 55147189 A JP55147189 A JP 55147189A JP 14718980 A JP14718980 A JP 14718980A JP S5771526 A JPS5771526 A JP S5771526A
Authority
JP
Japan
Prior art keywords
target
magnetic recording
recording medium
magnetic
temp
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
JP55147189A
Other languages
Japanese (ja)
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 JP55147189A priority Critical patent/JPS5771526A/en
Publication of JPS5771526A publication Critical patent/JPS5771526A/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

  • Manufacturing Of Magnetic Record Carriers (AREA)

Abstract

PURPOSE:To make a magnetic recording medium of superior recording and reproducing and reproducing characteristics at high speeds by setting the temp. of a target of a ferromagnetic alloy consisting essentially of Co and Cr at above the curie point in forming a magnetic layer on a substrate by using a magnetron sputtering method. CONSTITUTION:In producing a magnetic recording medium 6 by forming a magnetic thin film 7 having an easy to magnetize axis in the perpendicular direction of the film and consisting essentially of Co and Cr on a substrate 2 by a magnetron sputtering method, the temp. of a target 15 consisting of a ferromagnetic alloy consisting essentially of Co and Cr is set at above the curie point of the target, whereby the intended magnetic recording medium is obtained. Namely, if the temp. of the target 15 is set at above the curie point, the magnetic flux 13 generated by a permanent magnet 11 leaks to the outside of the target 15 and electrons are confined, by which the speed of sputtering is increased and the magnetic recording media are produced at high speeds.
JP55147189A 1980-10-20 1980-10-20 Production of magnetic recording medium Pending JPS5771526A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55147189A JPS5771526A (en) 1980-10-20 1980-10-20 Production of magnetic recording medium

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55147189A JPS5771526A (en) 1980-10-20 1980-10-20 Production of magnetic recording medium

Publications (1)

Publication Number Publication Date
JPS5771526A true JPS5771526A (en) 1982-05-04

Family

ID=15424572

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55147189A Pending JPS5771526A (en) 1980-10-20 1980-10-20 Production of magnetic recording medium

Country Status (1)

Country Link
JP (1) JPS5771526A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59195323A (en) * 1983-04-20 1984-11-06 Victor Co Of Japan Ltd Manufacture of vertical magnetic recording medium

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59195323A (en) * 1983-04-20 1984-11-06 Victor Co Of Japan Ltd Manufacture of vertical magnetic recording medium

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