Electrocaloric Behavior and Temperature-Dependent Scaling of Dynamic Hysteresis of Ba0.85Ca0.15Ti0.9Zr0.1O3 Ceramics

This article presents electrocaloric effect in Ba0.85Ca0.15Ti0.9Zr0.1O3 (BCTZO) using an indirect approach based on Maxwell's relations. The peak electrocaloric performance is found to be an adiabatic temperature change of 0.41K with electrocaloric strength of 19mKcm/kV and a heat carrying capacity of similar to 0.17J/g under an electric field of 0-21.5kV/cm. The ferroelectric hysteresis scaling relations for coercive field (E-C), remnant polarization (P-r), and hysteresis area () as a function of temperature (T) are also systematically investigated. The power-law temperature exponents are obtained for all the hysteresis parameters. The scaling relations are established as E-c T-0.6584, P-r T-1.59, and T-1.01623. The presented scaling relations are compared with those reported in the literature for other ferroelectric materials.