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Science 3 March 2006:
Vol. 311. no. 5765, pp. 1270 - 1271
DOI: 10.1126/science.1123811
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Reports

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

A. S. Mischenko,1* Q. Zhang,2 J. F. Scott,3 R. W. Whatmore,2 N. D. Mathur1

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.

1 Department of Materials Science, University of Cambridge, Pembroke Street, Cambridge CB2 3QZ, UK.
2 Department of Advanced Materials, School of Industrial and Manufacturing Science, Cranfield University, Beds, MK43 0AL, UK.
3 Centre for Ferroics, Earth Sciences Department, University of Cambridge, Cambridge CB2 3EQ, UK.

* To whom correspondence should be addressed. E-mail: am507{at}cam.ac.uk

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THIS ARTICLE HAS BEEN CITED BY OTHER ARTICLES:
Large Electrocaloric Effect in Ferroelectric Polymers Near Room Temperature.
B. Neese, B. Chu, S.-G. Lu, Y. Wang, E. Furman, and Q. M. Zhang (2008)
Science 321, 821-823
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Applications of Modern Ferroelectrics.
J. F. Scott (2007)
Science 315, 954-959
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