Synthesis and Dielectric Characterization of BaZrNb2O8 High Temperature Piezoelectric ceramics.

We present here the structural, dielectric and polarization studies on BaZrNb₂O₈ piezo-ceramics synthesized by solid state ceramic route. Microstructural, structural, dielectric and polarization characteristics have been studied using scanning electron microscopy, XRD, impedance measurement and P-E hysteresis measurements, respectively. Rietveld refinement of XRD data reveals that BaZrNb₂O₈ sample crystallizes into monoclinic crystal structure with space group P2/m. The temperature dependent dielectric measurement reveals that BaZrNb₂O₈ sample displays relaxer behavior. The P-E hysteresis measurement of BaZrNb₂O₈ piezoceramic shows polarization of 1.75 μC/cm² at an electric field of 25 kV/cm. [ABSTRACT FROM AUTHOR]