Method for the production of alkaline-earth ferrites and lead fe

Details Method for the production of alkaline-earth ferrites and lead fe Method for the production of alkaline-earth ferrites and lead fe

1989-06-23

1991-03-19

Bell, Mark L.

Compositions

Magnetic

Iron-oxygen compound containing

252 6259, 423594, C04B 3526

Patent

active

050008650

ABSTRACT:
Platelike alkaline-earth ferrites and lead ferrites for memory cores are produced from impure initial substances by decomposing the initial substances with a molten, basic alkali compound, and the precursor separated off after dissolution in water is annealed for 0.5 to 6 hours at 600.degree. to 950.degree. C.

REFERENCES:
patent: 4138466 (1979-02-01), Meussdoerffer et al.
patent: 4571885 (1987-06-01), Gaud et al.
patent: 4585568 (1986-04-01), Nagai et al.
patent: 4820433 (1989-04-01), Yamamoto

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