PEROVSKITE OXYNITRIDE PARTICLE PRODUCTION METHOD, AND PEROVSKITE OXYNITRIDE PARTICLES

摘要

PROBLEM TO BE SOLVED: To provide: perovskite oxynitride particles excellent in size and shape homogeneity without a heterogenous phase; and low-cost production of the perovskite oxynitride particles excellent in size and shape homogeneity without a heterogenous phase.SOLUTION: A method of producing perovskite oxynitride particles represented by general formula ABONcomprises: an intermediate oxide synthetic process of synthesizing perovskite intermediate oxide ABO; and a nitriding process of heat-treating the perovskite intermediate oxide at a temperature of 900°C or less in an ammonia atmosphere. A is at least one A site element selected from the group consisting of Ca, Sr and Ba; B is a B site element being Nb or Ta; and 0