Giant electrocaloric effect in thin-film PbZr0.95Ti0.05O3

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 ferroelec...

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Bibliographic Details
Published in:Science (American Association for the Advancement of Science) 2006-03, Vol.311 (5765), p.1270-1271
Main Authors: MISCHENKO, A. S, ZHANG, Q, SCOTT, J. F, WHATMORE, R. W, MATHUR, N. D
Format: Article
Language:English
Subjects:
Condensed matter: electronic structure, electrical, magnetic, and optical properties
Dielectrics, piezoelectrics, and ferroelectrics and their properties
Exact sciences and technology
Ferroelectricity and antiferroelectricity
Phase transitions and curie point
Physics
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Summary: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.
ISSN:0036-8075
1095-9203
DOI:10.1126/science.1123811