Abstract
The crystal structure and electromechanical properties of a novel lead-free (1-z) (0.67Bi(1.05)FeO(3)-0.33BaTiO(3))-zBi(Mg0.5Zr0.5)O-3 (BFBT-BMZ100z, with z = 0.00-0.10) ceramic were studied using a mixed oxide method. The addition of BMZ to the BF-BT host system had no significant influence on the crystal structure. The dielectric constant was reduced when BMZ was incorporated, and the dielectric curves became more dispersed. For z = 0.060 composition, increased electric field-induced strain was attained with dynamic piezoelectric constant S-max/E-max = d*(33) = 315 pm/V at 4 kV/mm. This sample (z = 0.060) also has a high Curie temperature of T-C = 420 degrees C. The developed system's observed features suggest that it could be useful for high-temperature piezoelectric devices.