Production of single crystalline ferrite particles

Details Production of single crystalline ferrite particles Production of single crystalline ferrite particles

1974-05-23

1978-09-26

Sever, Frank

Adhesive bonding and miscellaneous chemical manufacture

Delaminating processes adapted for specified product

Delaminating in preparation for post processing recycling step

156DIG74, 156DIG78, 23305F, 423594, B01J 1706, C01G 4902, C01F 1100

Patent

active

041167520

ABSTRACT:
Single crystalline, ferrite particles are obtained by the thermal reaction of ferric oxyhydroxide, ferric hydroxide, porous ferric oxide made therefrom or ferric oxide having a particle size less than 0.8.mu. with a strontium or barium compound such as the oxide, hydroxide, the carbonate or the carboxylate in the presence of a small amount of a metal chloride flux such as strontium chloride or barium chloride.
The resulting particles have a well-defined, hexagonal plate configuration and are particularly adapted for the production of anisotropic magnets.

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Hilpert: "The Preparation of Magnetic Oxides of Iron", pp. 65-68.

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