Difference between revisions of "Electrocaloric effect"
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| − | < | + | <font color="blue">Effet électrocalorique</font> (''Fr''). <font color="red">Elektrokalorischer Effekt</font> (''Ge''). <font color="black">Effetto electrocalorico</font> (''It''). <font color="green">Efecto electrocalórico</font> (''Sp''). |
== Definition == | == Definition == | ||
| − | The electrocaloric effect is the converse of the pyroelectric effect: it describes the | + | The electrocaloric effect is the converse of the pyroelectric effect: it describes the variation of entropy δσ of a material submitted to an applied electrical field ''E<sub>i</sub> '': |
<center> | <center> | ||
| − | '' | + | ''δσ'' = ''p<sub>i</sub><sup>T</sup>'' ''E<sub>i</sub> '' |
</center> | </center> | ||
where ''p<sub>i</sub><sup>T</sup>'' is the electrocaloric coefficient at constant stress. It is equal to the pyroelectric coefficient. | where ''p<sub>i</sub><sup>T</sup>'' is the electrocaloric coefficient at constant stress. It is equal to the pyroelectric coefficient. | ||
| + | |||
| + | == See also == | ||
| + | *[[Pyroelectricity]] | ||
| + | *[http://www.iucr.org/iucr-top/comm/cteach/pamphlets/18/ ''An introduction to crystal physics''] (Teaching Pamphlet No. 18 of the International Union of Crystallography) | ||
| + | *Chapters 1.1.4 and Part 3 of ''International Tables for Crystallography, Volume D'' | ||
| + | |||
| + | [[Category:Physical properties of crystals]] | ||
Latest revision as of 16:12, 29 November 2017
Effet électrocalorique (Fr). Elektrokalorischer Effekt (Ge). Effetto electrocalorico (It). Efecto electrocalórico (Sp).
Definition
The electrocaloric effect is the converse of the pyroelectric effect: it describes the variation of entropy δσ of a material submitted to an applied electrical field Ei :
δσ = piT Ei
where piT is the electrocaloric coefficient at constant stress. It is equal to the pyroelectric coefficient.
See also
- Pyroelectricity
- An introduction to crystal physics (Teaching Pamphlet No. 18 of the International Union of Crystallography)
- Chapters 1.1.4 and Part 3 of International Tables for Crystallography, Volume D