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7. Effect of temperature on structure, dielectric and ferroelectric properties of modified BaZrTiO3 ceramic.

Author

Sangwan, Kanta Maan, Ahlawat, N., Kundu, R. S., Rani, Suman, Rani, Agam, Rani, Sunita, Singh, Biswas, and Das

Subjects
BARIUM compounds, SOLID state physics, RIETVELD refinement, DIELECTRIC properties, ACTIVATION energy, TETRAGONAL crystal system, ARRHENIUS equation
Abstract

BaZr0.045(Mn0.03Ti0.97)0.955O3(BZMT) ceramic was prepared via mixed-oxide solid state reaction method. XRD technique confirmed formation of single phase crystalline material. Rietveld refinement of XRD data revealed that the material has tetragonal phase with space group P4mm. The scanning electron microscope (SEM) investigation shows that grains are dense and irregular. The dielectric properties were study as a function of frequency and temperature. The relaxation mechanism was found thermally activated with activation energy 1.21eV and follows Arrhenius law. Modified ceramic showed ferroelectric properties with a high remnant polarization, saturation polarization and coercive field and Pr/Ps ratio. [ABSTRACT FROM AUTHOR]

Published
2018
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