Plate-like magnetite particles, plate-like maghemite particles a

Details Plate-like magnetite particles, plate-like maghemite particles a Plate-like magnetite particles, plate-like maghemite particles a

1990-03-15

1992-03-03

Breneman, R. Bruce

Chemistry of inorganic compounds

Oxygen or compound thereof

Metal containing

423634, 342 1, 252 6256, C01G 4908

Patent

active

050931008

ABSTRACT:
Disclosed herein are poreless, non-sintered plate-like magnetite particles having an average particle diameter of more than 0.5 .mu.m and not more than 2.0 .mu.m, and a BET specific surface area of not more than 6.0 m.sup.2 /g, and poreless, non-sintered plate-like maghemite particles having an average particle diameter of more than 0.5 .mu.m and not more than 2.0 .mu.m, and a BET specific surface area of not more than 6.0 m.sup.2 /g.

REFERENCES:
patent: 4311684 (1982-01-01), Umeki
patent: 4404254 (1983-09-01), Franz et al.
patent: 4865834 (1989-09-01), Tanihara et al.
Chemical Abstracts, vol. 92, No. 6, 2/80, p. 119, Abstract No. 44001e, U.S. & JP-A-79 101 796 (Sumitomo Metal Mining).
Chemical Abstracts, vol. 100, No. 26, 6/84, p. 90, Abstract No. 211715h, "Studies on Micaceous . . . Iron Oxide" Ham et al.

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