Magnetic recording medium

Details Magnetic recording medium Magnetic recording medium

1990-02-26

1992-10-27

Thibodeau, Paul J.

Stock material or miscellaneous articles

All metal or with adjacent metals

Composite; i.e., plural, adjacent, spatially distinct metal...

428408, 428611, 428694, 428695, 428900, G11B 2300

Patent

active

051588331

ABSTRACT:
A magnetic recording medium having high recording density and being capable of obtaining excellent over-write characteristics by having a magnetic layer including Co and Ni as its principal components on a non-magnetic substrate, the Ni content of the magnetic layer is greater at portions closer to the surface of the magnetic layer in the direction of its thickness; the Ni content at portions closer to the surface of the magnetic layer is 20.about.50 at %; and the portion closer to the surface of the magnetic layer has at least one element selected from the group consisting of Zr, Ti, Pt, Ru, Ta, Rh, V, Nb, Cr and Pd.

REFERENCES:
patent: 4587178 (1986-05-01), Shimizu et al.
patent: 4594296 (1986-06-01), Noguchi et al.
patent: 4889767 (1989-12-01), Yokoyama et al.
patent: 5006388 (1991-04-01), Kuzuo et al.

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