Title:
VERTICAL MAGNETIC RECORDING MEDIUM
Document Type and Number:
Japanese Patent JPS5755531
Kind Code:
A
Abstract:
PURPOSE: To attain a high orientation factor and at the same time to increase the characteristics of recording density for a vertical magnetic recording medium using Co-Cr alloy thin film, by using a specific substrate.
CONSTITUTION: Cr is stuck on a nonmagnetic substrate of a film, etc. with a thickness of about 500 by a vapor deposition method. After this, a soft magnetic thin film layer of permalloy, etc. is formed in about 3,000 thickness by the vapor deposition method using an electric gun. Furthermore, a Co-Cr alloy layer containing about 18 atom % Cr is formed in about 3,000 on the soft magnetic thin film layer by a sputtering process.
Inventors:
MATSUO TAKESHI
NISHIKAWA REIJI
FUJIWARA YUUKO
NISHIKAWA REIJI
FUJIWARA YUUKO
Application Number:
JP12946980A
Publication Date:
April 02, 1982
Filing Date:
September 18, 1980
Export Citation:
Assignee:
TOKYO SHIBAURA ELECTRIC CO
International Classes:
G11B5/64; G11B5/66; G11B5/667; G11B5/73; G11B5/738; (IPC1-7): G11B5/66