Piezoelectric, dielectric, and elastic properties of electrically-depolarized BaTiO3 ceramic

The components of the tensors of piezoelectric moduli, dielectric constants , and elastic compliances are calculated within the self-consistency approx imation for three ferroelectric modifications of the depolarized BaTiO3 cer amic. The calculated and the measured values of the components are compared . It is concluded that the proper piezoelectric effect (corresponding to th e static domain structure of crystallites) in the depolarized ceramic can b e masked by various domain processes.