Magnetic recording medium

Details Magnetic recording medium Magnetic recording medium

1994-12-02

1997-01-07

Kiliman, Leszek

Stock material or miscellaneous articles

Circular sheet or circular blank

Recording medium or carrier

428 657, 428336, 428667, 428694T, 428694TS, 428694ST, 428694SG, 428900, 2041922, 20419223, G11B 566, B32B 516, B32B 302

Patent

active

055915027

ABSTRACT:
Proposed is a magnetic recording medium consisting of a non-magnetic substrate and a magnetic recording layer formed thereon by the method of sputtering, in which the non-magnetic substrate is a disk of single crystal silicon having a surface of the crystallographic orientation of (100), the surface roughness Rp being 40 nm or smaller. By virtue of the use of the unique material for the substrate, the magnetic recording layer is outstandingly stable as compared with conventional aluminum or glass substrates and the magnetic layer formed thereon by sputtering has a greatly improved coercive force of 1300 oersted or higher.

REFERENCES:
patent: 4689260 (1987-08-01), Briske

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