Effect of Filler Materials on Texture Development in Bi0.5(Na0.85K0.15)0.5TiO3 Ceramics

Textured Bi0.5(Na0.85K0.15)TiO3 (BNKT) ceramics were prepared by reactive-templated grain growth method with platelike Bi4Ti3O12 grains as reactive templates. A mixture of raw materials or a pre-reacted BNKT powder was added as filler to control the amount of template grains. This work focused on the effect of filler material type on the chemical reaction and compositional homogeneity. The mixture of raw materials gave a faster reaction rate than did the pre-reacted BNKT powder. The slower reaction with the pre-reacted BNKT powder resulted in the formation of a liquid phase and a retarded texture development.