Ag. Luchaninov et al., Orientational contribution to the piezoelectric constants of BaTiO3 ceramic in ferroelectric phases with various symmetries, PHYS SOL ST, 41(6), 1999, pp. 984-986
A self-consistent method based on the interaction of a piezoelectric sphere
with a piezoelectric medium that has anisotropic elastic and dielectric pr
operties is used to calculate the components of the tensor piezoelectric mo
dulus of BaTiO3 ceramic in all three ferroelectric modifications. A compari
son of the calculated and measured piezoelectric moduli shows that at least
60-70% of the piezoelectric effect in BaTiO3 ceramic is caused by domain b
oundary movement throughout the entire ferroelectric region. (C) 1999 Ameri
can Institute of Physics. [S1063-7834(99)03306-7].