Inorganic filler and composite dielectric material using the same

Abstract

It is an object of the present invention to provide an inorganic filler, which effectively suppresses elution of A-site metals such as Ba, Ca, Sr, and Mg from a perovskite-type composite oxide and which can be particularly preferably used as an inorganic filler for a composite dielectric body. The inorganic filler of the present invention is characterized in that it comprises a perovskite-type composite oxide that has been coated by hydrolyzing a titanate coupling agent in a solvent. The pH of the inorganic filler is preferably 8.5 or less when it is dispersed in water, and the aforementioned solvent is preferably water.

Dependencies are inferred from the claim text.