Soft ferrite material for use in making inductors, and method fo

Details Soft ferrite material for use in making inductors, and method fo Soft ferrite material for use in making inductors, and method fo

1997-06-19

1999-01-05

Bonner, Melissa

Compositions

Magnetic

Iron-oxygen compound containing

252 6262, 501 32, 501 49, 501 79, C04B 3528, H01F 1113, H01F 137

Patent

active

058558101

ABSTRACT:
A soft ferrite material for manufacturing a device for shielding electromagnetic frequencies such as wire coiling inductors and chip components including chip inductors and chip beads is disclosed. Particularly, an Ni--Cu--An soft ferrite material and a method for manufacturing a wire coiling type or chip type inductor using the ferrite material are disclosed, in which a low temperature sintering is possible, the variations of the electromagnetic properties are low as against an external stress, and the electromagnetic properties are superior. A B.sub.2 O.sub.3 --Bi.sub.2 O.sub.3 --ZnO glass is added in an amount of 0.05-15.0 wt % to the ordinary Ni--Cu--Zn soft raw material, and this mixture is sintered at a temperature of 860.degree.-910.degree. C.

REFERENCES:
patent: 2685568 (1954-08-01), Wilson
patent: 4741849 (1988-05-01), Naito et al.
patent: 5252521 (1993-10-01), Robets

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