Preparation of cobalt-containing isotropic magnetic iron oxides

Details Preparation of cobalt-containing isotropic magnetic iron oxides Preparation of cobalt-containing isotropic magnetic iron oxides

1987-02-12

1988-07-05

Cooper, Jack

Compositions

Magnetic

Iron-oxygen compound containing

C01G 4906

Patent

active

047553154

ABSTRACT:
A process for the preparation of cobalt-containing isotropic magnetic iron oxides which are based on gamma-iron(III) oxide, contain from 2 to 7% by weight of cobalt(II) ions and less than 2% by weight of Fe(II) ions, the percentages in each case being based on the iron oxide, and have a particle length of from 0.08 to 0.30 .mu.m, a length/width ratio of from 1.5 to 3.5:1 and a specific remanent magnetization after saturation of not less than 60 nTm.sup.3 /g.

REFERENCES:
patent: 3052567 (1962-09-01), Gabor
patent: 3117933 (1964-01-01), Abeck et al.
patent: 3897354 (1975-07-01), Woditsch et al.
patent: 3974079 (1976-08-01), Woditsch et al.
patent: 4297395 (1981-10-01), Buxbaum et al.

Affiliated with

Also associated with

Rating

Preparation of cobalt-containing isotropic magnetic iron oxides does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Preparation of cobalt-containing isotropic magnetic iron oxides, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Preparation of cobalt-containing isotropic magnetic iron oxides will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2331052