Compositions – Magnetic – Iron-oxygen compound containing
Patent
1990-04-30
1991-11-05
Cooper, Jack
Compositions
Magnetic
Iron-oxygen compound containing
252 6258, 252 6259, 252 626, 252 6262, 252 6263, 252 6264, 428694, 428900, C04B 3526
Patent
active
050629832
ABSTRACT:
A magnetic powder for magnetic recording media, which has an average particle diameter of at most 0.08 .mu.m and a ratio of the maximum diameter to the maximum thickness of at most 8 and is represented by the following general composition formula:
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Tadashi Ido et al., "Barium Ferrite Fine Particles for Perpendicular Magnetic Recording Media" Toshiba Review, No. 154, Winter 1985, pp. 10-13.
Kinebuchi Tatsuo
Sawabe Hidenori
Urata Hidenobu
Yamamoto Haruhisa
Cooper Jack
Nippon Zeon Co. Ltd.
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