Origin of the Large Negative Electrocaloric Effect in Antiferroelectric PbZrO3

Abstract

We have studied the electrocaloric response of the archetypal antiferroelectric PbZrO3 as a function of voltage and temperature in the vicinity of its antiferroelectric-paraelectric phase transition. Large electrocaloric effects of opposite signs, ranging from an electro-cooling of -3.5 K to an electro-heating of +5.5 K, were directly measured with an infrared camera. We show by calorimetric and electromechanical measurements that the large negative electrocaloric effect comes from an endothermic antiferroelectric-ferroelectric switching, in contrast to dipole destabilization of the antiparallel lattice, previously proposed as an explanation for the negative electrocaloric effect of antiferroelectrics.

arXiv commentArticle (17 pages) and supplemental material (12 pages) present in .pdf file

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Cited by in corpus (6)

• Translational boundaries as incipient ferrielectric domains in antiferroelectric PbZrO3
• Origin of negative electrocaloric effect in Pnma-type antiferroelectric perovskites
• Negative electrocaloric effect in nonpolar phases of perovskite over wide range of temperature
• Lattice-distortion couplings in antiferroelectric perovskite $\mathrm{AgNb}{\mathrm{O}}_3$ and comparison with $\mathrm{PbZr}{\mathrm{O}}_3$
• Birefringence induced by antiferroelectric switching in transparent polycrystalline $PbZ{r}_{0.95}T{i}_{0.05}{O}_3$ film
• Tunable electrocaloric effect in lead scandium tantalate through calcium doping