Giant Electrocaloric Effect in Thin-Film PbZr0.95Ti0.05O3

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Science  03 Mar 2006:
Vol. 311, Issue 5765, pp. 1270-1271
DOI: 10.1126/science.1123811

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An applied electric field can reversibly change the temperature of an electrocaloric material under adiabatic conditions, and the effect is strongest near phase transitions. We demonstrate a giant electrocaloric effect (0.48 kelvin per volt) in 350-nanometer PbZr0.95Ti0.05O3 films near the ferroelectric Curie temperature of 222°C. A large electrocaloric effect may find application in electrical refrigeration.

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