Thin film magnetic recording disk comprising alternating layers

Details Thin film magnetic recording disk comprising alternating layers Thin film magnetic recording disk comprising alternating layers

1989-03-16

1991-09-24

Cashion, Jr., Merrell C.

Stock material or miscellaneous articles

Circular sheet or circular blank

Recording medium or carrier

428694, 428900, 428926, 428928, G11B 2300

Patent

active

050512889

ABSTRACT:
An improved CoPt based or CoNi based alloy magnetic recording disk for horizontal recording has a magnetic recording layer which is a laminated structure of relatively thin magnetic alloy films separated by relatively thin non-magnetic spacer films. The resulting laminated disk structure has substantially decreased intrinsic media noise at high linear recording densities.

REFERENCES:
patent: 3350180 (1967-10-01), Croll
patent: 3479156 (1969-11-01), Ginder
patent: 3516076 (1970-06-01), Stein
patent: 3787237 (1974-09-01), Grunberg
patent: 4596646 (1986-06-01), Kitada
patent: 4610935 (1986-09-01), Kumasaka
patent: 4652499 (1987-03-01), Howard
W. T. Maloney, "Sputtered Multilayer Films For Digital Magnetic Recording" IEEE Transactions on Magnetics, vol. Mag.-15, No. 3, Jul. 1979, pp. 1135-1137.
S. Katayama, et al., "Magnetic Properties and Read-Write Characteristics of Multilayer Films on a Glass Substrate", IEEE Transactions on Magnetics, vol. 24, No. 6, Nov. 1988, pp. 2982-2984.

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