Magnetic recording medium

Details Magnetic recording medium Magnetic recording medium

1987-06-11

1989-05-09

Thibodeau, Paul J.

Stock material or miscellaneous articles

Structurally defined web or sheet

Including components having same physical characteristic in...

427131, 427132, 428215, 428336, 428694, 428900, G11B 564

Patent

active

048289051

ABSTRACT:
In a magnetic recording medium in which a metallic base layer and a magnetic layer are provided on a nonmagnetic nonmetallic substrate, an intermediate layer is additionally formed between the substrate and the metallic base layer in order to improve peeling-off resistance of the metallic base layer for durability against magnetic head contact-start-stop operation. The intermediate layer is a metal oxide layer including at least one of specified elements, or a composite layer made up of the metal oxide layer and a metal or alloy layer including at least one of the same specified elements and formed on the metal oxide layer. The specified element include Ti, Zr, Hf, V, Nb, Ta, Cr, Mo, W and Mn. Oxygen concentration in the oxide layer may decrease toward the metallic base layer. The oxide layer may be replaced by nitride layer of these metals.

REFERENCES:
patent: 4411963 (1983-10-01), Aine
patent: 4631202 (1986-12-01), Opfer et al.
patent: 4695510 (1987-09-01), Sawamura et al.

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