Journal of the American Ceramic Society, Vol.85, No.5, 1114-1120, 2002
Factors determining grain orientation in bismuth sodium potassium titanate-lead zirconate titanate solid solutions made by the reactive templated grain growth method
Grain-oriented Bi-0.5(Na0.85K0.15)(0.5)TiO3-Pb(Zr1-xTix)O-3 (BNKT-PZT) ceramics were prepared via the reactive templated grain growth method, using plate-like Bi4Ti3O12 particles. Factors that determine the degree of orientation were examined. Prereacted PZT gave a larger degree of orientation than PZT raw materials (PbO, ZrO2, and TiO2) in the 75BNKT-25PZT (x = 0.5) system. Increases in the titanium concentration in the PZT of the 75BNKT-25PZT system and in the BNKT concentration in the yBNKT-(100 - y)PZT (x = 0.5) system increased the degree of orientation. The direction of material transport between BNKT and PZT was important to obtain ceramics with a large degree of orientation.