Title:
DIELECTRIC CERAMIC, MULTILAYER CERAMIC CAPACITOR, METHOD FOR PRODUCING THE DIELECTRIC CERAMIC, AND METHOD FOR MANUFACTURING THE MULTILAYER CERAMIC CAPACITOR
Document Type and Number:
WIPO Patent Application WO/2012/035935
Kind Code:
A1
Abstract:
Provided is a multilayer ceramic capacitor which has excellent life characteristics in a high-temperature load test even in cases where the dielectric layer is further reduced in thickness. A dielectric ceramic which contains, as a main component, a compound that is represented by the following general formula: (Ba1-x-yCaxRey)(Ti1-zMz)O3 (wherein Re represents at least one element selected from among La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu and Y; M represents at least one element selected from among Mg, Mn, Al, Cr and Zn) and satisfies 0 ≤ x ≤ 0.2, 0.002 ≤ y ≤ 0.1 and 0.001 ≤ z ≤ 0.05 is used as the dielectric ceramic that constitutes a dielectric layer (2) of a multilayer ceramic capacitor (1). This dielectric ceramic has an average crystal grain size of 20-150 nm (inclusive).
Inventors:
FUKUDA MEGUMI (JP)
YAO TAKAYUKI (JP)
YAO TAKAYUKI (JP)
Application Number:
PCT/JP2011/068942
Publication Date:
March 22, 2012
Filing Date:
August 23, 2011
Export Citation:
Assignee:
MURATA MANUFACTURING CO (JP)
FUKUDA MEGUMI (JP)
YAO TAKAYUKI (JP)
FUKUDA MEGUMI (JP)
YAO TAKAYUKI (JP)
International Classes:
C04B35/468; H01B3/12; H01G4/12; H01G4/30
Domestic Patent References:
| WO2008013236A1 | 2008-01-31 | |||
| WO2010098033A1 | 2010-09-02 | |||
| WO2004067473A1 | 2004-08-12 |
Foreign References:
| JP2008297133A | 2008-12-11 | |||
| JP2008081350A | 2008-04-10 | |||
| JP2007145649A | 2007-06-14 | |||
| JP2009012990A | 2009-01-22 |
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Claims:
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