Precursor

特許 権利維持 PROBLEM TO BE SOLVED: To provide a high-purity uniform precursor composition and a method for production thereof, and to provide a method for producing an SnTiO<SB>4</SB>-based oxide dielectric substance which can inexpensively be generated by heat-treating the composition at low temperatures, has high relative dielectric constant [epsilon]<SB>r</SB>and a high value of quality coefficient Q<SB>u</SB>and is excellent in temperature stability.