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Title:
FERRITE SINTERED BODY AND NOISE FILTER PROVIDED THEREWITH
Document Type and Number:
WIPO Patent Application WO/2012/018052
Kind Code:
A1
Abstract:
Disclosed are a ferrite sintered body with increased strength and a noise filter provided therewith. The disclosed ferrite sintered body has a Cu content of 1-10 mol% in terms of CuO. In the ferrite sintered body there are spinel-structure crystal containing Fe, Zn, Ni, Cu and O as the main phase, and there are particles of a Cu compound with average particle diameter of 0.5-10 μm at the crystal grain boundary. By means of the particles of the Cu compound at the crystal grain boundary, growth of particles in the main phase can be suppressed, allowing a composition comprising microcrystals, and because the propagation of fractures at the crystal grain boundary can be suppressed, the ferrite sintered body can have increased strength.

Inventors:
TAKENOSHITA HIDEHIRO (JP)
Application Number:
JP2011/067788
Publication Date:
February 09, 2012
Filing Date:
August 03, 2011
Export Citation:
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Assignee:
KYOCERA CORP (?6128501, JP)
TAKENOSHITA HIDEHIRO (JP)
International Classes:
C04B35/30; H01F1/34; H01F17/04
Foreign References:
JP2004323283A2004-11-18
JP2006151742A2006-06-15
JP2002104871A2002-04-10
JP2005064468A2005-03-10
JP2004269316A2004-09-30
JPH08310856A1996-11-26
Other References:
See also references of EP 2602236A4
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Claims: