Magnetic recording medium

Details Magnetic recording medium Magnetic recording medium

1996-01-31

1998-06-30

Resan, Stevan A.

Stock material or miscellaneous articles

All metal or with adjacent metals

Having metal particles

428561, 428611, 428668, 428694T, 428694TS, 428457, 428450, 428900, G11B 564

Patent

active

057747830

ABSTRACT:
The present invention relates to a magnetic recording medium for use in an external memory device of an information processing apparatus etc., and an object thereof is to reduce noise, achieve high coercive force, and use the substance as a magnetic recording medium for detecting signals in a magnetoresistance head. In the magnetic recording medium comprising the magnetic recording layer 25 including ferromagnetic grains 22 and a nonmagnetic substance 23, the improvement in structure comprises that the ferromagnetic grains 22 are formed to have respectively an average grain diameter of 50 nm or less and not to be overlapped in the film thickness direction and to be isolated in the direction along a layer surface, and that a product of residual magnetization and a film thickness of the magnetic recording layer 25 is less than or equal to 150 Gauss.cndot..mu.m.

REFERENCES:
patent: 4675240 (1987-06-01), Weiss
patent: 5062938 (1991-11-01), Howard
patent: 5476680 (1995-12-01), Coffey et al.
patent: 5573863 (1996-11-01), Hayakawa et al.
patent: 5585196 (1996-12-01), Inomata et al.

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