Investigation of surfactant effects in the preparation of (Bi_(0.5)Na_(0.5))TiO3-hexagonal BaTiO3 ceramics by electrophoretic deposition (EPD) method

摘要

Nowadays, piezoelectric materials are widely used in various applications such as actuators, sensors, and transducers. However, most of the piezoelectric devices are fabricated from lead-based piezoelectric materials. To replace lead-based ones, various lead-free piezoelectrics have been investigated. Among of them, (Bi_(0.5)Na_(0.5))TiO3-BaTiO3 (BNT-BT) ceramics system is are one of the candidates for lead-free piezoelectric materials because of their high Curie temperature. However, BNT-BT ceramics have poor piezoelectric properties which are difficult to use in real applications.