Barium titanate powder, semiconductor ceramic, and semiconducting ceramic electronic element

摘要

The present invention provides barium titanate powder having a dielectric strength of 800 V/mm or more and a specific resistance at room temperature of 100 OMEGA .cm or less, the specific resistance at room temperature undergoing substantially no time-course change. Barium titanate of the powder of the present invention assumes a cubic crystal system. The powder has a particle size of 0.1 mu m or less; the ratio represented by BaCO3/BaO as obtained through XPS is 0.42 or less; the lattice constant is 0.4020 nm or more; and the ratio represented by Ba/Ti is 0.988-0.995.