The influence of crystallite size on electrocaloric properties of ferroelectric ceramics
Annotation
The electrocaloric effect in non-linear dielectrics has been recently paid great attention to for its application in solid state cooling devices. One of the major drawbacks of these cooling devices is their low cooling capacity that limits their practical use. In this paper we investigated the influence of grain size on the adiabatic temperature change due to the electrocaloric effect in polycrystalline ferroelectric materials based on BST and PMN-PT. Mathematical models of electrocaloric effect dependence on the grain size have been developed, the simulation of solid state cooling device have been made.
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