Organic and inorganic relaxor ferroelectrics with giant electrocaloric effect

S. G. Lu; B. Rožič; Q. M. Zhang; Z. Kutnjak; Xinyu Li; E. Furman; Lee J. Gorny; Minren Lin; B. Malič; M. Kosec; R. Blinc; R. Pirc

doi:10.1063/1.3501975

Organic and inorganic relaxor ferroelectrics with giant electrocaloric effect

S. G. Lu, B. Rožič, Q. M. Zhang, Z. Kutnjak, Xinyu Li, E. Furman, Lee J. Gorny, Minren Lin, B. Malič, M. Kosec, R. Blinc, R. Pirc

Electrical Engineering

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309 Scopus citations

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.

Original language	English (US)
Article number	162904
Journal	Applied Physics Letters
Volume	97
Issue number	16
DOIs	https://doi.org/10.1063/1.3501975
State	Published - Oct 18 2010

All Science Journal Classification (ASJC) codes

Physics and Astronomy (miscellaneous)

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10.1063/1.3501975

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@article{7e29e15fec194b71a67b0a7e943ad2e5,

title = "Organic and inorganic relaxor ferroelectrics with giant electrocaloric effect",

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.",

author = "Lu, {S. G.} and B. Ro{\v z}i{\v c} and Zhang, {Q. M.} and Z. Kutnjak and Xinyu Li and E. Furman and Gorny, {Lee J.} and Minren Lin and B. Mali{\v c} and M. Kosec and R. Blinc and R. Pirc",

note = "Funding Information: Research at The Pennsylvania State University was supported by the U.S. DoE, Office of Basic Energy Sciences, Division of Materials Science and Engineering under Award No. DE-FG02-07ER46410. Research at JSI was supported by the Slovenian Research Agency under Grant Nos. P1-0125, P2-0105, and J1-2015. Copyright: Copyright 2010 Elsevier B.V., All rights reserved.",

year = "2010",

month = oct,

day = "18",

doi = "10.1063/1.3501975",

language = "English (US)",

volume = "97",

journal = "Applied Physics Letters",

issn = "0003-6951",

publisher = "American Institute of Physics",

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TY - JOUR

T1 - Organic and inorganic relaxor ferroelectrics with giant electrocaloric effect

AU - Lu, S. G.

AU - Rožič, B.

AU - Zhang, Q. M.

AU - Kutnjak, Z.

AU - Li, Xinyu

AU - Furman, E.

AU - Gorny, Lee J.

AU - Lin, Minren

AU - Malič, B.

AU - Kosec, M.

AU - Blinc, R.

AU - Pirc, R.

N1 - Funding Information: Research at The Pennsylvania State University was supported by the U.S. DoE, Office of Basic Energy Sciences, Division of Materials Science and Engineering under Award No. DE-FG02-07ER46410. Research at JSI was supported by the Slovenian Research Agency under Grant Nos. P1-0125, P2-0105, and J1-2015. Copyright: Copyright 2010 Elsevier B.V., All rights reserved.

PY - 2010/10/18

Y1 - 2010/10/18

N2 - 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.

AB - 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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JO - Applied Physics Letters

JF - Applied Physics Letters

IS - 16

M1 - 162904

ER -

Organic and inorganic relaxor ferroelectrics with giant electrocaloric effect

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