Title:
DIELECTRIC CERAMIC COMPOSITION, AND CERAMIC CAPACITOR
Document Type and Number:
WIPO Patent Application WO/2018/062084
Kind Code:
A1
Abstract:
The present dielectric ceramic composition is represented by the general formula {(Na1-v-w-xKvLiwM2x)(Nb1-y-zTayM4z)O3+αMnO+βLa2O3+γLi2O}. v, w, x, y, z, α, β, and γ are such that 0 ≤ v ≤ 0.01, 0 ≤ w ≤ 0.01, 0.05 ≤ x,z ≤ 0.15, 0 ≤ y ≤ 0.1, 0.003 ≤ α ≤ 0.05, 0.001 ≤ β ≤ 0.05, and 0.005 ≤ γ ≤ 0.05. M2 is Ba, Ca, and/or Sr, and M4 is Zr, Hf, and/or Sn. A ceramic layer 3 is formed from this dielectric ceramic composition, and an inner electrode 4 is formed from a base metal material such as Ni. This allows good dielectric properties to be obtained without loss of insulation, even when firing is performed in a reducing atmosphere, fluctuations in dielectric properties to be suppressed even when a direct current electrical field is applied, and good DC bias properties to be obtained.
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Inventors:
BANNO KOICHI (JP)
Application Number:
PCT/JP2017/034486
Publication Date:
April 05, 2018
Filing Date:
September 25, 2017
Export Citation:
Assignee:
MURATA MANUFACTURING CO (JP)
International Classes:
C04B35/495; H01G4/12; H01G4/30
Domestic Patent References:
| WO2014162752A1 | 2014-10-09 |
Foreign References:
| JP2014043358A | 2014-03-13 | |||
| JP2015163576A | 2015-09-10 | |||
| JP2011037697A | 2011-02-24 | |||
| JP2007055867A | 2007-03-08 |
Attorney, Agent or Firm:
KUNIHIRO Yasutoshi (JP)
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