Magnetic recording medium

Details Magnetic recording medium Magnetic recording medium

1988-03-11

1990-07-03

Thibodeau, Paul J.

Stock material or miscellaneous articles

Composite

Of inorganic material

2041922, 428611, 428678, 428900, 428928, G11B 2300

Patent

active

049390465

ABSTRACT:
A magnetic recording medium employing the ferromagnetic film as the magnetic layer is disclosed in which the non-magnetic metal and/or the non-magnetic metal oxide are diffused into the ferromagnetic film along the direction of film thickness so that the concentration distribution will become substantially uniform. The magnetic recording medium has a high rectangular ratio and a low dispersion of the coercive force.

REFERENCES:
patent: 4420531 (1983-12-01), Tokuda
patent: 4423452 (1983-12-01), Kajimoto et al.
patent: 4539264 (1985-09-01), Yazawa et al.
patent: 4539265 (1985-09-01), Yazawa et al.
patent: 4543301 (1985-09-01), Yazawa et al.
patent: 4567116 (1986-01-01), Sawada et al.
patent: 4595631 (1986-06-01), Matsumoto
patent: 4632870 (1986-12-01), Takamatsu et al.
patent: 4707756 (1987-11-01), Futamoto et al.

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