Comment on the use of calcium as a dopant in X8R BaTiO3-based ceramics

Abstract

Ba Ti 1 − x Ca x O 3 − x ceramics, where 0⩽x⩽0.04, prepared by the mixed oxide route at 1500°C display a strong suppression of the Curie temperature and a significant increase in grain conductivity with increasing x. The ramifications of these results on the applicability of using Ca2+ as a dopant to achieve X8R specification in BaTiO3-based formulations are discussed.