Dielectric ceramic composition

摘要

A dielectric ceramic composition consists essentially of Pb(Ni1/3Nb2/3)O3, PbTiO3, Pb(Zn1/2W1/2)O3 and Pb(Cu1/3Nb2/3)O3, the mole percentages of said four components being as follows: Pb(Ni1/3Nb2/3)O3-50.0 to 75.0 mole % PbTiO3-20.0 to 35.0 mole % Pb(Zn1/2W1/2)O3-0.5 to 15.0 mole % Pb(Cu1/3Nb2/3)O3-1.0 to 10.0 mole % The dielectric ceramic composition may further contain, as an additive, manganese in an amount of not more than 0.5 mole % in terms of MnO2. The composition possesses a high dielectric constant of not less than 8000 and a low sintering temperature of 900 DEG to 1000 DEG C.