| 摘要 |
A ceramic composition is herein disclosed, which is a lead-type perovskite compound capable of being subjected to low temperature-sintering among ceramic compositions for use in making capacitors, which has a high dielectric constant at room temperature of not less than 10000, a low temperature-dependency of the dielectric constant and a low decrease in capacitance upon application of a DC bias and which comprises, as a main constituent, a ternary system comprising lead magnesium niobate: (Pb(Mg1/3Nb2/3)O3), lead nickel niobate: (Pb(Ni1/3Nb2/3)O3) and lead titanate: (PbTiO3) in which part of the Pb2+ ions present in the ternary system are substituted with a desired amount of Sr2+ ions, Ba2+ ions or Ca2+ ions.
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