Abstract
In order to realize nickel electrode multilayer ceramic capacitors with high capacitance per volume, the holmium-doped (Ba, Ca, Mg)(Ti, Zr)O3 system was studied. In the case of maintaining an oxidizing atmosphere at the cooling stage, the resistivities of the dielectric materials were easily recovered by doping with Ho. The newly developed dielectric material exhibited high dielectric constant (18,000) and high resistivity (>10-12 Ω cm). Using the dielectrics, nickel electrode multilayer ceramic capacitors with high specific capacitance (Y5V 4.7 µF in EIA 1206 size) were developed. They showed highly reliable characteristics.