Synthesis and piezoelectric properties of (1-x)(Na0.5K0.5)NbO3-x(Ba0.95Sr0.05)TiO3 ceramics

Abstract

(1 - x)(Na0.5K0.5)NbO3-x(Ba0.95Sr0.05)TiO3 [(1 - x)NKN-xBST] ceramics were synthesized by the conventional solid-state sintering, and their microstructure and piezoelectric properties were investigated. The sintering temperature of the specimens was 1075 A degrees C in air atmosphere and a morphotropic phase boundary (MPB) was observed in the specimens with 0.03 a parts per thousand currency sign x a parts per thousand currency sign 0.05. Compared with the piezoelectric properties of the NKN ceramics, the enhanced d (33) value of 136 pC/N and E > (3) (T) /E > (o) value of 671 were obtained for the (1 - x)NKN-xBST specimens with x = 0.03.