Ferroelectric, piezoelectric, pyroelectric studies on BaTi0.95(Ni1/3Nb2/3)0.05O3 ceramic

The main objective of this paper is to study dielectric, ferroelectric, pyroelectric and piezoelectric proprieties of BaTi0.95(Ni1/3Nb2/3)0.05O3. From dielectric experiments, a single ferroelectric transition temperature of about 300K was found. The ferroelectric hysteresis loops were recorded versus temperature evidencing a saturation polarisation of about 4μC/cm2 and a coercive field of 0.97kV/cm at the lowest temperature. The most promising result for BaTi0.95(Ni1/3Nb2/3)0.05O3 is its effective piezoelectric coefficient d31which reaches 55pCN−1 at room temperature.