Piezoelectric Properties and Strain of PbNi_1/3Nb_2/3O₃-PbTiO₃-PBZrO₃ Ceramics

Abstract

The piezoelectric properties and strain of the PbNi_1/3Nb_2/3O₃-PbTiO₃-PbZrO₃ ceramic was investigated. The piezoelectric constant of the ceramic with the composition of the morphotropic phase boundary derived from the strain was 1110 pm/V. The strain of the ceramics with the tetragonal phase was 0.15% in the applied voltage at 2 kV. These excellent piezoelectric properties of this system are due to the large dielectric permittivity and electromechanical coupling coefficient as a normal ferroelectrics.