Method of manufacturing complex metal oxide powder and amorphous complex metal oxide

A method of manufacturing a complex metal oxide powder, the method comprising:

• preparing a raw material composition for forming a complex metal oxide;
• mixing an oxidizing solution including an oxidizing substance into the raw material composition to produce complex metal oxide particles to obtain a liquid dispersion of the particles;
• and
• separating the particles from the liquid dispersion to obtain a complex metal oxide powder;
• the complex metal oxide being shown by a general formula AB1−xCxO3, the element A including at least Pb, the element B including at least one of Zr, Ti, V, W, or Hf, and the element C including at least one of Nb or Ta;
• and
• the raw material composition including:
• at least one of a thermally-decomposable organometallic compound, a hydrolyzable organometallic compound or a partial hydrolyzate and/or a polycondensate of the hydrolyzable organometallic compound, at least one of the thermally-decomposable organometallic compound or the hydrolyzable organometallic compound including the element A and the element B or C;
• at least one of a polycarboxylic acid or a polycarboxylic acid ester;
• and
• an organic solvent,
• wherein the oxidizing solution is obtained by mixing a solution of an oxidizing substance and a solution of an alkaline substance.