Temperature dependent dynamic hysteresis scaling of ferroelectric hysteresis parameters of [(1-x)Ba0.9Ca0.1TiO3-x(BaSn0.2Ti0.8O3)] ceramics

Abstract

ABSTRACT This article presents the effect of processing parameters on the ferroelectric hysteresis behavior of [(1-x)Ba0.9Ca0.1TiO3-x(BaSn0.2Ti0.8O3)] ceramics for x = 0, 0.4, 0.45, 0.5 and 0.6 samples. The ferroelectric hysteresis scaling relations for coercive field (Ec) and remnant polarization (Pr) in the form of temperature have been proposed. The power law temperature exponents based on scaling were systematically established for the hysteresis parameters. The temperature dependent scaling of Ec and Pr at sintering temperature of 1480°C for 5 hr yields Ec α T−0.42, Ec α T−0.32, Ec α T−0.35 and Ec α T−0.34 and Pr α T−2.20, Pr α T−2.07,Pr α T−2.09 and Pr α T−2.12 respectively. Further, to analyze the domain dynamics, back switching polarization (Pbc) in terms of temperature (T) was also estimated by Arrhenius law and the average activation energy was evaluated. The maximum activation energy for domain switching is found to be 0.199 eV at 17 kV/cm for x = 0.6 sample.