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Motta, Antonella |
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Azevedo, Nuno Monteiro |
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Verma, Narendra Kumar
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Synthesis and dielectric characterization of BaZrNb2O8 high temperature piezoelectric ceramics
Abstract
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.