| abstract |
To provide a production method capable of obtaining a powdery composite metal oxide by a very simple method. A step of preparing a raw material composition for forming a composite metal oxide and an oxidizing solution containing an oxidizing substance are mixed with the raw material composition to produce particles of the composite metal oxide. Forming a dispersion liquid of the particles, and separating the particles from the dispersion liquid to form the powdered composite metal oxide. The composite metal oxide is represented by a general formula AB 1-x C x O 3 , the A element is composed of at least Pb, the B element is composed of at least one of Zr, Ti, V, W, and Hf, and the C element Is composed of at least one of Nb and Ta, and the raw material composition contains a pyrolyzable organometallic compound containing the A element, the B element or the C element, the A element, the B element or the C element. The hydrolyzable organometallic compound to be contained, at least one of its partial hydrolyzate and / or polycondensate, at least one of polycarboxylic acid and polycarboxylic acid ester, and an organic solvent. [Selection figure] None |