Abstract
The paper deals with measurements of non-linear properties of Pb(Zr x Ti 1− x )O 3 (PZT) type piezoelectric ceramics in the composition near to the morphotropic phase boundary (MPB). The hydrostatic piezoelectric coefficient d h was determined using the piezoelectric coefficients d 33 and d 31 obtained by resonance method. The temperature dependencies of d 33 and d 31 were compared with ones obtained by laser interferometry method. The differential hydrostatic coefficient d h,diff of PZT ceramics has been measured using a dynamic hydrostatic method. The influence of a DC bias electric field on d h,diff coefficient of a PZT ceramics was studied. Changes of the hydrostatic piezoelectric coefficients d h,diff caused by a bias electric field were observed at various temperatures.
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