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 (JP)
Application Number:
PCT/JP2015/072073
Publication Date:
February 11, 2016
Filing Date:
August 04, 2015
Export Citation:
Assignee:
MURATA MANUFACTURING CO (JP)
International Classes:
C04B35/49; H01G4/12; H01G4/30
Domestic Patent References:
| WO2014188845A1 | 2014-11-27 |
Foreign References:
| JPH08319159A | 1996-12-03 | |||
| JPH0920559A | 1997-01-21 | |||
| JPH09175862A | 1997-07-08 | |||
| JPH1017364A | 1998-01-20 | |||
| CN102515754A | 2012-06-27 |
Other References:
YASUO ARAI, CERAMICS NO ZAIRYO KAGAKU, 1 March 1975 (1975-03-01), Tokyo, pages 213
Attorney, Agent or Firm:
NISHIZAWA, HITOSHI (JP)
Hitoshi Nishizawa (JP)
Hitoshi Nishizawa (JP)
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