Ferrite sintered body, manufacturing method thereof, ferrite...

Details Ferrite sintered body, manufacturing method thereof, ferrite... Ferrite sintered body, manufacturing method thereof, ferrite...

2007-12-25

2007-12-25

Koslow, C. Melissa (Department: 1755)

Compositions

Magnetic

Iron-oxygen compound containing

C252S062600, C252S062570, C252S062590, C264S611000, C264S613000

Reexamination Certificate

active

11077719

ABSTRACT:
A ferrite sintered body is composed of an oxide containing, as metal element, at least Fe and Zn and at least one selected from Ni, Cu and Mn. This sintered body contain Fe of 42 to 50 mol % in terms of Fe2O3, and Zn of 15 to 35 mol % in terms of ZnO. When the Zn concentration in the sintered body interior is taken to be 1, the Zn concentration in the surface vicinity is 0.8 to 12. This increases the surface resistance of the ferrite sintered body and lowers its core loss.

REFERENCES:
patent: 3028337 (1962-04-01), Brownlow et al.
patent: 10-045415 (1998-02-01), None
patent: 2000-191377 (2000-07-01), None
patent: 2001-151564 (2001-06-01), None
patent: 2002-187769 (2002-07-01), None

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