Enhanced insulating and piezoelectric properties of BiFeO₃‐BaTiO₃‐Bi_0.5Na_0.5TiO₃ ceramics with high Curie temperature

BiFeO 3 ‐BaTiO 3 ceramics are promising lead‐free piezoelectric ceramics due to their high piezoelectric properties and high Curie temperature, but their high leakage current density makes the poling difficult. In this study, a decreased leakage current density by three orders of magnitude was obtained in Bi 0.5 Na 0.5 TiO 3 (BNT) added 0.67BiFeO 3 ‐0.33BaTiO 3 (BF‐BT) ceramics. It was found that the largely improved insulating properties...