The morphotropic phase boundary of SNN-BKN solid solution system

Abstract

The solid solution compositions of (1-x)Sr₂NaNb₅O₁₅(SNN)-(x)Ba₂Na Nb₅O₁₅(BKN) binary system(KNSBN) were prepared for 0.3≤ x ≤ 0.7. The changes in the dielectric behavior and the lattice constant have been studied with different chemical compositions. The abrupt changes appeared in both the dielectric properties and the lattice parameters at x = 0.4 and thus the morphotropic phase boundary of this solid-solution system is presumed to be near x = 0.4.