Glass-encapsulated magnetic materials and methods for making the

Details Glass-encapsulated magnetic materials and methods for making the Glass-encapsulated magnetic materials and methods for making the

1981-06-25

1982-11-23

Bell, Mark

Compositions

Magnetic

Iron-oxygen compound containing

252 6256, 501 32, 501 54, 65 301, C03C 330, C04B 3526, C04B 3528, C04B 3532

Patent

active

043604412

ABSTRACT:
Magnetic materials exhibiting ferrimagnetic and/or superparamagnetic behavior, produced by impregnating porous glasses with iron and, optionally, manganese, cobalt and nickel compounds, reacting the compounds with the porous glass to form bound complexes, heating the glass to expel unreacted organometallics, and further heating to convert the bound complexes to ferrimagnetic and/or superparamagnetic oxide crystallites, are described. Ferrimagnetic iron oxide crystallites exhibiting coercivities above 10,000 Oe can be made.

REFERENCES:
patent: 2919207 (1959-12-01), Scholzel
patent: 3015627 (1962-01-01), Ayers et al.
patent: 3996395 (1976-12-01), Chen et al.
patent: 4042519 (1977-08-01), Weaver
patent: 4126437 (1978-11-01), O'Horo
patent: 4140645 (1979-02-01), Beall et al.
patent: 4150173 (1979-04-01), Ziolo
patent: 4199614 (1980-04-01), Ziolo
patent: 4233169 (1980-11-01), Beall et al.

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