Metal thin film magnetic recording medium

Details Metal thin film magnetic recording medium Metal thin film magnetic recording medium

1994-03-11

1996-01-02

Thibodeau, Paul J.

Stock material or miscellaneous articles

Composite

Of inorganic material

428611, 428660, 428666, 428667, 428336, 428694TS, 428694TC, 428900, H01F 100, B32B 900, G11B 566, G11B 570

Patent

active

054807336

ABSTRACT:
The present invention provides a metal thin film magnetic recording medium in which an underlying Cr layer, a magnetic recording layer and a protection layer are laminated in this order on a non-magnetic medium substrate. The medium substrate comprises an NiPX layer laminated in this order on a non-metallic base plate such as a glass base plate or a carbon base plate. X is one or mope elements belonging to a group of 4, 5 and 6 in a periodic table, and the content X is less than 20 at % in total. A heat accumulating non-magnetic layer having excellent heat conductivity may be formed on the non-metallic base plate and laminated between the NiPX layer thereon.

REFERENCES:
patent: 4224381 (1980-09-01), Patel et al.
patent: 4749459 (1988-06-01), Yamashita et al.
patent: 4786564 (1988-11-01), Chen et al.
patent: 5037515 (1991-08-01), Tsai et al.
patent: 5084152 (1992-01-01), Lin
patent: 5314745 (1994-05-01), Okumura
Andriatis, A. K., "Experimental Studies of Sputtered Thin Film disk with Cobalt-Nickel chromium magnetic layer and Cr underlayer," Mater. Sci. Forum, 62-64, 601-602.
IEEE Transactions On Magnetics, vol. 27, No. 6, Nov. 1991, T. Yamashita, et al., "Sputtered NixP Underlayer For CoPt-Based Thin Film Magnetic Media", pp. 4727-4729.

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