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Title:
MULTILAYER CERAMIC CAPACITOR
Document Type and Number:
WIPO Patent Application WO/2016/021370
Kind Code:
A1
Abstract:
Provided is a multilayer ceramic capacitor which is capable of suppressing leakage current and insulation resistance deterioration at high temperatures, while ensuring relatively high relative dielectric constant. This multilayer ceramic capacitor is provided with: a ceramic laminate which comprises dielectric layers and an internal electrode that is provided at the interface between dielectric layers; and an external electrode which is formed on the outer surface of the ceramic laminate. Each dielectric layer contains, as a main component, a perovskite compound containing Ba, Ti, Zr and M, which is at least one element selected from among Ta, Nb, V and W, and contains Mn and Si as additional components. Relative to the total amount of Ti, Zr and M, the Zr content satisfies 40% by mole < Zr ≤ 90% by mole and the M content satisfies 1% by mole ≤ M ≤ 10% by mole. If the total amount of Ti, Zr and M is taken as 100 parts by mole, the Mn content and the Si content satisfy 1 part by mole ≤ Mn ≤ 10 parts by mole and 1 part by mole ≤ Si ≤ 5 parts by mole, and the molar ratio of Mn to M satisfies 0.5 ≤ Mn/M ≤ 3.0.

Inventors:
SUZUKI, Shoichiro (Ltd. 10-1 Higashikotari 1-chome, Nagaokakyo-sh, Kyoto 55, 〒6178555, JP)
OKAMOTO, Takafumi (Ltd. 10-1 Higashikotari 1-chome, Nagaokakyo-sh, Kyoto 55, 〒6178555, JP)
Application Number:
JP2015/069946
Publication Date:
February 11, 2016
Filing Date:
July 10, 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:
H01G4/30; C04B35/462; H01B3/12; H01G4/12
Domestic Patent References:
WO2004063119A12004-07-29
Foreign References:
JP2004043279A2004-02-12
JP2003526201A2003-09-02
US20060229188A12006-10-12
JP2008280231A2008-11-20
JP2010010157A2010-01-14
JP2007119293A2007-05-17
Attorney, Agent or Firm:
OKADA, Masahiro (3rd Floor Iyo Building, 2-21, Minamihonmachi 4-chome, Chuo-ku, Osaka-sh, Osaka 54, 〒5410054, JP)
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