Magnetic recording medium

Details Magnetic recording medium Magnetic recording medium

1995-12-05

1998-04-07

Resan, Stevan A.

Stock material or miscellaneous articles

All metal or with adjacent metals

Having magnetic properties, or preformed fiber orientation...

428212, 428216, 428336, 428667, 428668, 428694TM, 428694TS, 428694TP, 428 657, 428694TF, 428694TC, 428900, G11B 566

Patent

active

057362629

ABSTRACT:
A magnetic recording medium comprising: a non-magnetic substrate;
a Co-based alloy magnetic layer (ML); and a non-magnetic Cr-based underlayer position between said magnetic layer and said substrate, compatibly provided with a high S/N and a high coercive force, and an intermediate layer (IL), formed of a Co-based alloy having the hcp structure, which is positioned between the magnetic layer and the non-magnetic underlayer, said intermediate layer having a ratio R=(BsIL*IL)/(BsML*ML), which is the product (BsIL*IL) of the saturation magnetic flux density (BsIL) of the Co-based alloy which constitutes said intermediate layer and the thickness (tIL) of the intermediate layer film to the product (BsML*ML) of the saturation magnetic flux density (BsML) of the Co-based alloy which constitutes said magnetic layer and the magnetic layer film thickness (tML) at 0.2 or less.

REFERENCES:
patent: 5543221 (1996-08-01), Kitakami et al.
patent: 5569533 (1996-10-01), Lal et al.
patent: 5587235 (1996-12-01), Suzuki et al.

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