INORGANIC FILLER AND COMPOSITE DIELECTRIC MATERIAL USING THE SAME

摘要

Disclosed is an inorganic filler which effectively suppresses dissolution of an A-site metal such as Ba, Ca, Sr and Mg of a complex perovskite oxide. In particular, this inorganic filler is suitably used as an inorganic filler for composite dielectrics. Specifically disclosed is an inorganic filler which is characterized by being composed of a complex perovskite oxide which is coated by hydrolyzing a titanate coupling agent in a solvent. In this connection, the solvent is preferably water, and the inorganic filler has a pH of not more than 8.5 when dispersed in water.