[10p-M116-1~22] 9.1 Dielectrics, ferroelectrics

▼ [10p-M116-10] Development of BaTiO₃-Bi(Mg_1/2Ti_1/2)O₃-BiFeO₃ ceramics by various ceramic processing for enhanced piezoelectric properties

〇(M2)HyunWook Nam¹, Ichiro Fujii¹, Sangwook Kim¹, Tomoya Aizawa¹, Shintaro Ueno¹, Satoshi Wada¹ (1.University of Yamanashi)

Keywords:BT-BF based piezoelectric ceramics

The BaTiO₃-Bi(Mg_1/2Ti_1/2)O₃-BiFeO₃ ceramic is the one of the new candidates for replacing lead-based piezoelectric ceramics, because of their high Curie Temperature (T_C). During processing, however, the presence of defects may form defect complexes which pin domain walls and thus decrease ferroelectric and piezoelectric properties. In this work, Mn-added 0.3BaTiO₃-0.1Bi(Mg_1/2Ti_1/2)O₃-0.6BiFeO₃ (0.3BT-0.1BMT-0.6BF) ceramics were investigated by various ceramic processing such as annealing and quenching processes, and A-site non-stoichiometry compositions for enhanced ferroelectric and piezoelectric properties.