Process for producing ferromagnetic powder

Details Process for producing ferromagnetic powder Process for producing ferromagnetic powder

1976-07-01

1978-01-17

Cooper, Jack

Compositions

Magnetic

Iron-oxygen compound containing

252 6256, 427127, C01G 4906, C01G 4908, G11B 564

Patent

active

040691640

ABSTRACT:
In a process for producing ferromagnetic powder which comprises adding an aqueous solution containing Co.sup.+2 ions, with or without another cation or cations, and an alkali solution to a suspension of ferromagnetic iron oxide, and heating the mixture to produce ferromagnetic iron oxide containing the metal provided by such an ion (s), the improvement wherein the heating is carried out in the presence of an oxidizing agent.

REFERENCES:
patent: 3075919 (1963-01-01), Gruber et al.
patent: 3243375 (1966-03-01), Jeschke
Umeki et al., "Chem Abstracts", vol. 82, 1975, 79751v.

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