Abstract
The electrocaloric effect (ECE) in inorganic thin film and organic relaxor ferroelectrics is investigated by directly measuring the ECE around room temperature. The results reveal that giant ECEs can be obtained in the high energy electron irradiated poly(vinylidene fluoride-trifluoroethylene) relaxor copolymer and in the La-doped Pb(ZrTi)O3 relaxor ceramic thin films, which are much larger than that from the normal ferroelectric counterparts. The large ECE observed, compared with normal ferroelectrics, is likely caused by the large number of disordered fluctuating polarization entities in relaxor ferroelectrics which can lead to extra entropy contributions and larger ECE.
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Dates
Type | When |
---|---|
Created | 14 years, 10 months ago (Oct. 19, 2010, 6:22 p.m.) |
Deposited | 2 years ago (July 31, 2023, 5:04 a.m.) |
Indexed | 5 days, 18 hours ago (Aug. 23, 2025, 1:06 a.m.) |
Issued | 14 years, 10 months ago (Oct. 18, 2010) |
Published | 14 years, 10 months ago (Oct. 18, 2010) |
Published Online | 14 years, 10 months ago (Oct. 19, 2010) |
Published Print | 14 years, 10 months ago (Oct. 18, 2010) |
@article{Lu_2010, title={Organic and inorganic relaxor ferroelectrics with giant electrocaloric effect}, volume={97}, ISSN={1077-3118}, url={http://dx.doi.org/10.1063/1.3501975}, DOI={10.1063/1.3501975}, number={16}, journal={Applied Physics Letters}, publisher={AIP Publishing}, author={Lu, S. G. and Rožič, B. and Zhang, Q. M. and Kutnjak, Z. and Li, Xinyu and Furman, E. and Gorny, Lee J. and Lin, Minren and Malič, B. and Kosec, M. and Blinc, R. and Pirc, R.}, year={2010}, month=oct }