Electrical field dependence of electrocaloric effect in relaxor ferroelectrics

S. G. Lu; Z. H. Cai; Y. X. Ouyang; Y. M. Deng; S. J. Zhang; Q. M. Zhang

doi:10.1016/j.ceramint.2015.03.206

Electrical field dependence of electrocaloric effect in relaxor ferroelectrics

S. G. Lu, Z. H. Cai, Y. X. Ouyang, Y. M. Deng, S. J. Zhang, Q. M. Zhang

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

46 Citations (Scopus)

Abstract

Relaxor ferroelectrics demonstrate great potential in achieving large electrocaloric effect (ECE) which could be used as cooling devices in microelectronics industry as well as in daily life. The electrical field dependence of ECE, however, remains unclear, especially for relaxor ferroelectrics. The electrical field dependence of ECE can help to predict the ECE characteristics of cooling devices, and facilitate the design of highly efficient refrigerators. In this work, relaxor ferroelectric 0.71Pb(Mg_1/3Nb_2/3)O₃-0.29PbTiO₃ (PMN-PT) (011) single crystals, (PbLa)(ZrTi)O₃ ceramic thin films, and poly(vinylidene fluoride-trifluoroethylene-chlorofluoroethylene) (P(VDF-TrFE-CFE))/poly(vinylidene fluoride-trifluoroethylene) (P(VDF-TrFE)) terpolymer/copolymer blends were used to investigate the electrical field dependence of ECE. Direct method was used to measure the ECE adiabatic temperature change as a function of electrical field. Results indicate that, the ECE temperature change tends to show quadratic relationship, i.e., ΔT-E², at lower electrical fields. At higher fields, however, the temperature change has a tendency towards saturation in terms of the relationship, i.e., ΔT-E^2/3. In the intermediate electrical fields, the temperature change shows a roughly linear relationship with electrical field. The above phenomena could be illustrated in the frame of approximately continuous phase transition derived Belov-Goryaga equation, which can be modified for ferroelectrics. © 2015 Elsevier Ltd and Techna Group S.r.l. All rights reserved.

Original language	English
Pages (from-to)	S15-S18
Journal	Ceramics International
Volume	41
Issue number	S1
DOIs	https://doi.org/10.1016/j.ceramint.2015.03.206
Publication status	Published - 1 Jul 2015
Externally published	Yes

Bibliographical note

Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to <a href="mailto:[email protected]">[email protected]</a>.

Funding

This work was supported by the Natural Science Foundation of China under Grant no. 51372042 . The authors thank the invaluable help from B. Rozic, Z. Kutnjak, R. Xia and X. Z. Chen.

Research Keywords

C. Ferroelectric properties
Phase transition
Polarization
Relaxor ferroelectrics

Access Output

10.1016/j.ceramint.2015.03.206

Other Access Options

Check CityUHK Library

Permanent Link

Right click to copy link

Cite this

@article{e7a35edbf7e6400b9dd99f5fdf73f303,

title = "Electrical field dependence of electrocaloric effect in relaxor ferroelectrics",

abstract = "Relaxor ferroelectrics demonstrate great potential in achieving large electrocaloric effect (ECE) which could be used as cooling devices in microelectronics industry as well as in daily life. The electrical field dependence of ECE, however, remains unclear, especially for relaxor ferroelectrics. The electrical field dependence of ECE can help to predict the ECE characteristics of cooling devices, and facilitate the design of highly efficient refrigerators. In this work, relaxor ferroelectric 0.71Pb(Mg1/3Nb2/3)O3-0.29PbTiO3 (PMN-PT) (011) single crystals, (PbLa)(ZrTi)O3 ceramic thin films, and poly(vinylidene fluoride-trifluoroethylene-chlorofluoroethylene) (P(VDF-TrFE-CFE))/poly(vinylidene fluoride-trifluoroethylene) (P(VDF-TrFE)) terpolymer/copolymer blends were used to investigate the electrical field dependence of ECE. Direct method was used to measure the ECE adiabatic temperature change as a function of electrical field. Results indicate that, the ECE temperature change tends to show quadratic relationship, i.e., ΔT-E2, at lower electrical fields. At higher fields, however, the temperature change has a tendency towards saturation in terms of the relationship, i.e., ΔT-E2/3. In the intermediate electrical fields, the temperature change shows a roughly linear relationship with electrical field. The above phenomena could be illustrated in the frame of approximately continuous phase transition derived Belov-Goryaga equation, which can be modified for ferroelectrics. {\textcopyright} 2015 Elsevier Ltd and Techna Group S.r.l. All rights reserved.",

keywords = "C. Ferroelectric properties, Phase transition, Polarization, Relaxor ferroelectrics",

author = "Lu, {S. G.} and Cai, {Z. H.} and Ouyang, {Y. X.} and Deng, {Y. M.} and Zhang, {S. J.} and Zhang, {Q. M.}",

note = "Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to <a href={"}mailto:[email protected]{"}>[email protected]</a>.",

year = "2015",

month = jul,

day = "1",

doi = "10.1016/j.ceramint.2015.03.206",

language = "English",

volume = "41",

pages = "S15--S18",

journal = "Ceramics International",

issn = "0272-8842",

publisher = "Elsevier Ltd.",

number = "S1",

}

TY - JOUR

T1 - Electrical field dependence of electrocaloric effect in relaxor ferroelectrics

AU - Lu, S. G.

AU - Cai, Z. H.

AU - Ouyang, Y. X.

AU - Deng, Y. M.

AU - Zhang, S. J.

AU - Zhang, Q. M.

N1 - Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to <a href="mailto:[email protected]">[email protected]</a>.

PY - 2015/7/1

Y1 - 2015/7/1

N2 - Relaxor ferroelectrics demonstrate great potential in achieving large electrocaloric effect (ECE) which could be used as cooling devices in microelectronics industry as well as in daily life. The electrical field dependence of ECE, however, remains unclear, especially for relaxor ferroelectrics. The electrical field dependence of ECE can help to predict the ECE characteristics of cooling devices, and facilitate the design of highly efficient refrigerators. In this work, relaxor ferroelectric 0.71Pb(Mg1/3Nb2/3)O3-0.29PbTiO3 (PMN-PT) (011) single crystals, (PbLa)(ZrTi)O3 ceramic thin films, and poly(vinylidene fluoride-trifluoroethylene-chlorofluoroethylene) (P(VDF-TrFE-CFE))/poly(vinylidene fluoride-trifluoroethylene) (P(VDF-TrFE)) terpolymer/copolymer blends were used to investigate the electrical field dependence of ECE. Direct method was used to measure the ECE adiabatic temperature change as a function of electrical field. Results indicate that, the ECE temperature change tends to show quadratic relationship, i.e., ΔT-E2, at lower electrical fields. At higher fields, however, the temperature change has a tendency towards saturation in terms of the relationship, i.e., ΔT-E2/3. In the intermediate electrical fields, the temperature change shows a roughly linear relationship with electrical field. The above phenomena could be illustrated in the frame of approximately continuous phase transition derived Belov-Goryaga equation, which can be modified for ferroelectrics. © 2015 Elsevier Ltd and Techna Group S.r.l. All rights reserved.

AB - Relaxor ferroelectrics demonstrate great potential in achieving large electrocaloric effect (ECE) which could be used as cooling devices in microelectronics industry as well as in daily life. The electrical field dependence of ECE, however, remains unclear, especially for relaxor ferroelectrics. The electrical field dependence of ECE can help to predict the ECE characteristics of cooling devices, and facilitate the design of highly efficient refrigerators. In this work, relaxor ferroelectric 0.71Pb(Mg1/3Nb2/3)O3-0.29PbTiO3 (PMN-PT) (011) single crystals, (PbLa)(ZrTi)O3 ceramic thin films, and poly(vinylidene fluoride-trifluoroethylene-chlorofluoroethylene) (P(VDF-TrFE-CFE))/poly(vinylidene fluoride-trifluoroethylene) (P(VDF-TrFE)) terpolymer/copolymer blends were used to investigate the electrical field dependence of ECE. Direct method was used to measure the ECE adiabatic temperature change as a function of electrical field. Results indicate that, the ECE temperature change tends to show quadratic relationship, i.e., ΔT-E2, at lower electrical fields. At higher fields, however, the temperature change has a tendency towards saturation in terms of the relationship, i.e., ΔT-E2/3. In the intermediate electrical fields, the temperature change shows a roughly linear relationship with electrical field. The above phenomena could be illustrated in the frame of approximately continuous phase transition derived Belov-Goryaga equation, which can be modified for ferroelectrics. © 2015 Elsevier Ltd and Techna Group S.r.l. All rights reserved.

KW - C. Ferroelectric properties

KW - Phase transition

KW - Polarization

KW - Relaxor ferroelectrics

UR - http://www.scopus.com/inward/record.url?scp=84937521657&partnerID=8YFLogxK

UR - https://www.scopus.com/record/pubmetrics.uri?eid=2-s2.0-84937521657&origin=recordpage

U2 - 10.1016/j.ceramint.2015.03.206

DO - 10.1016/j.ceramint.2015.03.206

M3 - RGC 21 - Publication in refereed journal

SN - 0272-8842

VL - 41

SP - S15-S18

JO - Ceramics International

JF - Ceramics International

IS - S1

ER -

Electrical field dependence of electrocaloric effect in relaxor ferroelectrics

Abstract

Bibliographical note

Funding

Research Keywords

Access Output

Other Access Options

Permanent Link

Other Files and Links

Fingerprint

Cite this