PROPERTIES OF Y5V MULTILAYER CERAMIC CAPACITORS WITH NICKEL ELECTRODES

In order to realize nickel electrode multilayer ceramic capacitors wit h high capacitance per volume, the holmium-doped (Ba, Ca, Mg)(Ti, Zr)O 3 system was studied. In the case of maintaining an oxidizing atmosphe re at the cooling stage, the resistivities of the dielectric materials were easily recovered by doping with Ho. The newly developed dielectr ic material exhibited high dielectric constant (18,000) and high resis tivity (>10(-12) OMEGA cm). Using the dielectrics, nickel electrode mu ltilayer ceramic capacitors with high specific capacitance (Y5V 4.7 mu F in EIA 1206 size) were developed. They showed highly reliable charac teristics.