Difference between revisions of "Electrocaloric effect"

From Online Dictionary of Crystallography

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Revision as of 09:23, 12 January 2007

Effet électrocalorifique (Fr).


The electrocaloric effect is the converse of the pyroelectric effect: it describes the electrical response of a material to a thermal impetus. For instance, if the material is submitted uniformly to a temperature variation δΘ, an electrical polarisation Pi appears:

Pi = piT δΘ

where piT is the electrocaloric coefficient at constant stress. It is equal to the pyroelectric coefficient.