Enhanced piezoelectric properties of (Bi,Sc)O3-(Pb,Ti)O3 ceramics by optimized calcination process

Abstract

Enhanced piezoelectric properties of (Bi,Sc)O3-(Pb,Ti)O3 (BS-PT) ceramics were prepared under optimized calcination and sintering conditions. Both the calcination and sintering conditions of (Bi,Sc)O3-(Pb,Ti)O3 ceramics significantly affect the grain size and density, which effects are closely related to the microstructure, piezoelectric, and other properties of the ceramics. The calcination temperature was varied from 720 to 840 °C in 30 °C increments. Optimizing the calcination temperature improved the piezoelectric coefficient from 388 to 440 pC/N, while improving the relative dielectric constant at 100 Hz from 1401 to 1479. We believe that the optimized calcination process can enhance the piezoelectric properties of (Bi,Sc)O3-(Pb,Ti)O3 ceramics by a very large margin.