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Scaling law for electrocaloric temperature change in antiferroelectrics
S Lisenkov1, B K Mani1, E Glazkova1
1Department of Physics, University of South Florida, Tampa, Florida 33620, USA.
Abstract:
A combination of theoretical and first-principles computational methods, along with experimental evidence from the literature, were used to predict the existence of a scaling law for the electrocaloric temperature change in antiferroelectric materials. We show that the temperature change scales quadratically with electric field, allowing a simple transformation to collapse the set of ΔT(E) onto a single curve. This offers a unique method that can be used to predict electrocaloric behavior beyond the limits of present measurement ranges or in regions where data are not yet available.
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