Process for preparing selected, doped magnetite/carbonate co-pre

Details Process for preparing selected, doped magnetite/carbonate co-pre Process for preparing selected, doped magnetite/carbonate co-pre

1987-03-11

1988-10-25

Lusignan, Michael

Compositions

Magnetic

Iron-oxygen compound containing

252 6256, 252 6262, 252 6263, C01G 4908, C04B 3526, C04B 3564

Patent

active

047802324

ABSTRACT:
Doped co-precipitates of magnetite (Fe.sub.3 O.sub.4) and ACO.sub.3, wherein A is barium, are prepared by a simplified process. This process involves reacting together, in an aqueous medium containing dopant ions, a ferric compound, a ferrous compound, a barium compound and an alkali metal carbonate.

REFERENCES:
patent: 4539129 (1985-09-01), Nagai et al.
patent: 4565726 (1986-01-01), Oguchi et al.
patent: 4582623 (1986-04-01), Kubo et al.
patent: 4585568 (1986-04-01), Nagai et al.
patent: 4664831 (1987-05-01), Hibst et al.

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