Magnetic recording medium

Details Magnetic recording medium Magnetic recording medium

1993-04-30

1996-05-07

Kiliman, Leszek

Stock material or miscellaneous articles

Web or sheet containing structurally defined element or...

Including a second component containing structurally defined...

428329, 428330, 428694B, 428694BA, 427128, 427129, 427130, 427131, 252 6254, 252 6258, 252 6261, 252 6262, 252 6263, B32B 516, G11B 566, B05D 512, C04B 3504

Patent

active

055144632

ABSTRACT:
A magnetic recording medium includes a non-magnetic support and a magnetic layer, The magnetic layer comprises a binder and a Co-containing iron-based metal powder dispersed in the binder, characterized in that particles of the metal powder have a greater Co concentration in their surface layer than their inside of the particles, The Co-containing metal powder is easily dispersed in a binder and provides high Br/Bm and orientation. If Ba is contained in the starting powder the localization of Co in the surface area is realized.

REFERENCES:
patent: 4323621 (1982-04-01), Kober
patent: 4748080 (1988-05-01), Itozawa
patent: 4803132 (1989-02-01), Kishimoto
patent: 4857417 (1989-08-01), Kitaoka et al.
patent: 4980230 (1990-12-01), Saito et al.

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