Method for preparing ferromagnetic iron oxide particles

Details Method for preparing ferromagnetic iron oxide particles Method for preparing ferromagnetic iron oxide particles

1986-11-10

1989-10-24

Garvin, Patrick P.

Compositions

Magnetic

Iron-oxygen compound containing

252 6258, 252 6259, 252 6263, C04B 3526

Patent

active

048760226

ABSTRACT:
A method for preparing ferromagnetic iron oxide particles comprising the steps of depositing Co-ferrite fine particles onto the surface of acicular iron oxyhydroxide particles and then calcining said acicular iron oxyhydroxide having said C0-ferrite fine particles deposited thereon.

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patent: 3654163 (1972-04-01), Makino et al.
patent: 3720618 (1973-03-01), Toda et al.
patent: 3887479 (1975-06-01), McLain
patent: 3903004 (1975-09-01), Matsumoto et al.
patent: 4033891 (1977-07-01), Matsui et al.
patent: 4255492 (1981-03-01), Audran et al.
patent: 4296149 (1981-10-01), Rudolf et el.
patent: 4297395 (1981-10-01), Buxbaum et al.

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