Piezoelectric Properties of PbNi<sub>1/3</sub>Nb<sub>2/3</sub>O<sub>3</sub>-PbTiO<sub>3</sub>-PbZrO<sub>3</sub> Ceramics Near the MPB

Abstract

The change in the electromechanical coupling factor, k33, was investigated as a function of PbNi1/3Nb2/3O3-PbTiO3-PbZrO3 (PNN-PT-PZ) piezoelectric ceramic composition near the morphotropic phase boundary. Ceramics were sintered both in air and in a powder-bed. The average grain size of the PNN-PT-PZ ceramics obtained by sintering in the powder-bed was larger than that in air. Utilizing the powder-bed sintering technique, a high performance PNN-PT-PZ ceramic with a k33 of 80.8% was obtained.