Magnetic recording medium

Details Magnetic recording medium Magnetic recording medium

1985-07-01

1987-10-20

Thibodeau, Paul J.

Stock material or miscellaneous articles

Web or sheet containing structurally defined element or...

Physical dimension specified

427131, 428694, 428695, 428698, 428900, G11B 564, G11B 572

Patent

active

047013745

ABSTRACT:
A magnetic recording medium obtained by forming a Si-N-O system film on a magnetic recording layer with perpendicular axis of easy magnetization. The magnetic recording layer is a metallic magnetic film such as Co-Cr system alloy film. The oxygen content in the Si-N-O system film is selected preferably to show a maximum absorption of infrared radiation in the range above 830 cm.sup.-1 and below 1100 cm.sup.-1 of 1/.lambda. (.lambda. is the wavelength of the infrared radiation). Through formation of the Si-N-O system film, the magnetic recording medium can satisfy simultaneously both of the durability and the perpendicular magnetic recording characteristics.

REFERENCES:
patent: 4187344 (1980-02-01), Fredriksson
patent: 4411963 (1983-10-01), Aine
patent: 4529659 (1985-07-01), Hoshino et al.
patent: 4565734 (1986-01-01), Arai et al.

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