Composite metal compound

特許 係属中 PROBLEM TO BE SOLVED: To provide a method for producing efficiently and at a low cost a Sc-containing composite metal oxide, a composite metal nitride, a composite metal oxinitride, a composite metal sulfide, or a composite metal oxisulfide having a small particle size, a uniform chemical composition and a single phase, by a liquid phase method with the use of a small quantity of an organic compound.