Cobalt-containing magnetic iron oxide and process for producing

Details Cobalt-containing magnetic iron oxide and process for producing Cobalt-containing magnetic iron oxide and process for producing

1996-04-22

1997-03-11

Bonner, Melissa

Compositions

Magnetic

Iron-oxygen compound containing

428403, C04B 3526

Patent

active

056097891

ABSTRACT:
Cobalt-containing magnetic iron oxide particles extremely suitable for magnetic recording mediums, especially for image recording mediums and a process for producing the same from the precursor, .gamma.-FeOOH which is advantageous in industry are disclosed. Cobalt-containing magnetic iron oxide particles satisfying the following equations (1), (2) and (3):

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patent: 4448761 (1984-05-01), Sarnecki et al.
patent: 4464352 (1984-08-01), Autzen et al.
patent: 4713261 (1987-12-01), Masaki et al.
patent: 5314750 (1994-05-01), Takedoi et al.

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