| Abstract: | A new lead-free (1-x)(Bi1/2K1/2)TiO3-xBi(Mn2/3Sb1/3)O3 (BKT-BMS) piezoelectric ceramics were prepared by conventional solid-state route. The experiments show that the addition of BMS induces the occurrence of a mixed tetragonal and pseudocubic phases, and the fraction of tetragonal to pseudocubic phases closes to 50:50 around the composition x = 0.015, at where the dielectric, ferroelectric and piezoelectric properties is optimized. It is highlighted that the Td for the composition x = 0.015 keeps at an adequately-high level around 205 °C. All these competitive properties of the composition x = 0.015 demonstrate the potential application for lead-free piezoelectric ceramics over a broad temperature range. |
