Electrically driven thermal changes in PbSc0.5Ta0.5O3 bulk ceramics are investigated using temperature and electric-field dependent differential scanning calorimetry and infrared thermometry. On first application and removal of electric field, we find asymmetries in the magnitude of isothermal entropy change Δ S and adiabatic temperature change Δ T, due to hysteresis. On subsequent field cycling, we find further asymmetries in the magnitude of Δ T due to non-linearity in the isofield legs of entropy-temperature plots.
@article{arxiv.2010.15705,
title = {Asymmetric electrocaloric effects in PbSc0.5Ta0.5O3 on field application and removal},
author = {E. Stern-Taulats and P. Lloveras and M. Barrio and J. -Ll. Tamarit and A. Planes and Ll. Mañosa and R. W. Whatmore and N. D. Mathur and X. Moya},
journal= {arXiv preprint arXiv:2010.15705},
year = {2020}
}