Rhombohedral-phase barium titanate as a piezoelectric transducer

摘要

A piezoelectric transducer includes a barium-titanate-based piezoelectric material having a poled, rhombohedral structure. The rhombohedral barium titanate structure can include a dopant, such as KNbO₃, BaHfO₃, BaSnO₃, BaZrO₃ or KTaO₃. The piezoelectric transducer can be used either as an actuator or as a sensor.