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Title:
DIELECTRIC CERAMIC AND LAMINATED CERAMIC CAPACITOR
Document Type and Number:
WIPO Patent Application WO/2016/021593
Kind Code:
A1
Abstract:
Provided are a dielectric ceramic having a relatively high relative permittivity and excellent load life at high temperatures, and a laminated ceramic capacitor having excellent high-temperature load life and excellent reliability (life characteristics). This dielectric ceramic comprises a perovskite-type compound including Ba, Ti, Zr, and Re (at least one type of rare-earth element including La, Ce, Nd, and Sm). If x is the molar ratio, Zr/(Ti+Zr), of Zr to the total of Ti and Zr and y is the molar ratio, Re/(Ba+Re), of Re to the total of Ba and Re, (x, y) is within a region surrounded by A (0.5, 0.1), B (0.95, 0.1), C (0.95, 0.2), D (0.9, 0.2), and E (0.5, 0.35).

Inventors:
TATEISHI Takashi (10-1, Higashikotari 1-chome, Nagaokakyo-sh, Kyoto 55, 〒6178555, JP)
Application Number:
JP2015/072073
Publication Date:
February 11, 2016
Filing Date:
August 04, 2015
Export Citation:
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Assignee:
MURATA MANUFACTURING CO.,LTD. (10-1, Higashikotari 1-chome Nagaokakyo-sh, Kyoto 55, 〒6178555, JP)
International Classes:
C04B35/49; H01G4/12; H01G4/30
Domestic Patent References:
WO2014188845A12014-11-27
Foreign References:
JPH08319159A1996-12-03
JPH0920559A1997-01-21
JPH09175862A1997-07-08
JPH1017364A1998-01-20
CN102515754A2012-06-27
Other References:
YASUO ARAI, CERAMICS NO ZAIRYO KAGAKU, 1 March 1975 (1975-03-01), Tokyo, pages 213
Attorney, Agent or Firm:
NISHIZAWA, Hitoshi (5th Floor, Daido Seimei Minami-kan 1-2-11, Edobori, Nishi-ku, Osaka-sh, Osaka 02, 〒5500002, JP)
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