Magnetic recording medium and its manufacturing method

Details Magnetic recording medium and its manufacturing method Magnetic recording medium and its manufacturing method

1993-07-23

1997-06-10

Killman, PHD, Leszek

Stock material or miscellaneous articles

Web or sheet containing structurally defined element or...

Physical dimension specified

428336, 428408, 428694T, 428694TP, 428 94TC, 428694TF, 428695, 428900, G11B 566, B32B 516

Patent

active

056373937

ABSTRACT:
A magnetic recording medium comprising a non-magnetic substrate, a ferromagnetic thin film on the non-magnetic substrate, a hard carbon film on the ferromagnetic thin film, a modified layer of which atomic ratio of nitrogen/carbon is 0.8% or more, and of which thickness is less than 3 nm on the hard carbon film, and a lubricant layer on the modified layer, has excellent electromagnetic conversion characteristic, running stability, durability, and weatherability.

REFERENCES:
patent: 4889767 (1989-12-01), Yokoyama et al.

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