Non-linear properties of PZT ceramics in the wide temperature range

The paper deals with measurements of non-linear properties of Pb(ZrxTi1−x)O3 (PZT) type piezoelectric ceramics in the composition near to the morphotropic phase boundary (MPB). The hydrostatic piezoelectric coefficient dh was determined using the piezoelectric coefficients d33 and d31 obtained by resonance method. The temperature dependencies of d33 and d31 were compared with ones obtained by laser interferometry method.The differential hydrostatic coefficient dh,diff of PZT ceramics has been measured using a dynamic hydrostatic method. The influence of a DC bias electric field on dh,diff coefficient of a PZT ceramics was studied. Changes of the hydrostatic piezoelectric coefficients dh,diff caused by a bias electric field were observed at various temperatures.