Investigation of Electromechanical, Piezoelectric and Ferroelectric Properties of Ba(Zr0.05Ti0.95)O3 Ceramic

Abstract

This paper demonstrates the structural, dielectric, ferroelectric, piezoelectric and electromechanical parameters of the pure-phase Ba(Zr0.05Ti0.95)O3 /BZT composition prepared through conventional solid state technique. The identification of compound and formation were analysed by X-ray diffraction (XRD) technique that demonstrated a pure perovskite phase of the synthesized composition. The sintering temperature- dependent density of the BZT ceramics wasstudied andthe sample with high density was considered for further study. Dense and well-defined grains were observed in the micrograph of the BZT sample studied by SEM analysis. The frequency depended dielectric study at the room temperature shows a very small variation of dielectric constant with frequency. Phase transitions related to orthorhombic symmetry to tetragonal symmetry, and, tetragonal symmetry to cubic symmetry were observed as of temperature variant dielectric study. The ferroelectric and piezoelectric strain behaviours were studied at different amplitudes and frequencies of applied field. The electromechanical parameters were obtained using the resonance and anti-resonance technique as mentioned in the IRE standard. The results obtained from the above studies point out that the BZT ceramic has the potential to be a candidate for environmentally friendly sensor and actuator device with high performance.