Resistance reduction effect of potassium bismuth titanate doping in yttrium–manganese co-doped medium Curie temperature barium titanate lead free ceramics through improved synthesis process

Abstract Through improved synthesis process, resistance reduction effect of (K 0.5 Bi 0.5 )TiO 3 (KBT) doping in Y–Mn co-doped BaTiO 3 (BT) lead free ceramics was investigated. By different doping methods (doping K 2 O, Bi 2 O 3 and TiO 2 or synthesized KBT), medium Curie temperature (around 130 °C) lead free BT ceramics were obtained with ultra-low resistivity (13.84 Ωcm) with a temperature maintaining process at 700 °C. In this contribution, effect of sintering process and doping methods is discussed in detail.