Ferroelectric and antiferroelectric properties of (Na0.5Bi0.5)TiO3-SrTiO3 solid solution ceramics

Abstract

Phase transitions in the solid solution Sr _χ(Na _0.5Bi _0.5)_l-χTiO₃ have been studied by dielectric, pyroelectric and D-E characteristic measurements. An intermediate antiferroelectric phase has been observed in the composition range of 0 ⩽ χ ⩽ 0.5 of this system. These compositions undergo a ferroelectric-antiferroelectric-paraelectric sequence of transitions at elevated temperatures. The antiferroelectric phase transition temperature and Curie point decrease monotonically with increasing SrTiO₃ concentration.