Magnetic recording medium

Details Magnetic recording medium Magnetic recording medium

1982-07-26

1986-05-06

Pianalto, Bernard D.

Stock material or miscellaneous articles

All metal or with adjacent metals

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

428336, 428621, 428624, 428626, 428678, 428900, 428928, H01F 1002

Patent

active

045871787

ABSTRACT:
A magnetic recording medium comprising a support, a first layer formed on the support by evaporating cobalt or its alloy by an oblique-incidence vacuum evaporation technique, and a second plated layer made of cobalt or its alloy and formed by a wet plating. The cobalt alloy for the first layer substantially consists of, aside from cobalt, up to 30 wt % of Ni, Fe, Cu, W, Cr, Ru or a mixture thereof. On the other hand, the cobalt alloy for the second layer substantially consists of up to 40 wt % of Ni, up to 8 wt % of P and the balance of Co.

REFERENCES:
patent: 4371590 (1983-02-01), Izumi et al.

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