Domain wall motion effect in piezoelectric ceramics

The internal friction ($Q^{ - 1}$) in multiple-components ceramics PZT type was measured as a function of temperature from 300 to 600 K. An internal friction peak (P$_{2}$) appears a few dozen degrees below Curie temperature ($T_{C}$). The P$_{2}$ peak of internal friction is found to be associated with the viscous-elastic mobility of domain walls. The internal friction due to the viscous-elastic mobility of domain walls was calculated and compared with the experimental data