Magnetic recording medium comprising an underlayer and a cobalt

Details Magnetic recording medium comprising an underlayer and a cobalt Magnetic recording medium comprising an underlayer and a cobalt

1992-11-12

1994-09-06

Resan, Stevan A.

Stock material or miscellaneous articles

Web or sheet containing structurally defined element or...

Physical dimension specified

428611, 428663, 428665, 428667, 428668, 428694T, 428694TM, 428694TS, 428694TP, 428900, 428928, G11B 500

Patent

active

053447069

ABSTRACT:
The present invention pertains to a thin film media structure for low noise high density longitudinal magnetic recording. The thin film media structure is comprised of a substrate. The thin film media structure is also comprised of an underlayer in contact with the substrate. Additionally, the thin film media structure is comprised of a CoSm or a CoSmQ film in contact with the underlayer such that the underlayer is between the substrate and the CoSm or CoSmQ. In a preferred embodiment, the underlayer is made of Cr or W and there is additionally an overlayer in contact with the CoSm or CoSmQ film, an overcoat in contact with the overlayer and an organic lubricant disposed on the overcoat. The present invention also pertains to a low noise high coercivity media structure for longitudinal magnetic recording. The high coercivity media structure is comprised of a substrate. The high coercivity media structure is also comprised of a multi-magnetic layer comprised of at least two layers of an alloy of Co and Sm, or Co and Sm and Q with an intermediate layer therebetween, and an underlayer in contact with the substrate and between the substrate and one of the CoSm layers.

REFERENCES:
patent: 3615911 (1971-10-01), Nesbitt et al.
patent: 4287225 (1981-09-01), Kneller et al.
patent: 4414287 (1983-11-01), Kneller et al.
patent: 4560624 (1985-12-01), Guttner et al.
patent: 4735840 (1988-04-01), Hedgcoth
patent: 4820584 (1989-04-01), Morita et al.
patent: 4883711 (1989-11-01), Shiroishi et al.
patent: 5147732 (1992-09-01), Shiroishi et al.
Nathan Belk et al, J. Appl. Phys. 59(2) Jan. 15, 1986 p. 551.
W. T. Maloney, IEEE Transactions on Magnetics vol. Mag 15 No. 6 Nov. 1979, p. 1546.
M. Gronau et al., IEEE Transactions on Magnetics, vol. Mag-20, No. 1, Jan. 1984.
W. T. Maloney, IEEE Transactions on Magnetics, vol. Mag-15, No. 3, Jul. 1979, p. 1135.
David E. Laughlin, IEEE Transactions on Magnetics, vol. 27, No. 6, Nov. 1991, p. 4713.

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