Magnetite particles and process for production of the same

Details Magnetite particles and process for production of the same Magnetite particles and process for production of the same

1996-06-25

1998-03-31

Bonner, Melissa

Compositions

Magnetic

Iron-oxygen compound containing

252 6259, 106456, 106457, C01G 4908, C03G 9083, H01F 111

Patent

active

057334714

ABSTRACT:
The present invention provides magnetite particles having a particle shape of an octahedron, a specific surface area of 5 m.sup.2 /g or more as determined by the BET method and. a coercive force of 40 to 100 Oe, or a particle shape of a hexahedron, a specific surface area of 6 m.sup.2 /g or more as determined by the BET method and a coercive force of 40 to 80 Oe, and a process for production of magnetite particles

REFERENCES:
patent: 4975214 (1990-12-01), Sakashita et al.

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