Quenched bismuth ferrite barium titanate lead free piezoelectric ceramics
Abstract In this work, the quenched method can effectively promote the electrical properties of bismuth ferrite barium titanate (BiFeO3 BaTiO3, BFO BTO) ceramics. Here we mainly focused on the modification of the quenched methods in the 0.67Bi1.05FeO3 0.33BaTiO3 ceramics with rhombohedral cubic phase boundary. By optimizing the preparation conditions, the ceramics possess high Curie temperature (TC~457 degC) large piezoelectricity (d33~170 pC/N) and good ferroelectricity (Pr~22 mC/cm2) The enhanced electrical properties are mainly assigned to the quenching technique with optimized conditions. We believe that such a systematic research can point out a way for further fabricating high performance ceramics.