Enhancing the electrocaloric effect of PbZr0.4Ti 0.6O3/PbTiO3 superlattices via composition tuning

B. Li; J. B. Wang; X. L. Zhong; F. Wang; B. L. Liu; X. J. Lou; Y. C. Zhou

doi:10.1209/0295-5075/95/67004

Enhancing the electrocaloric effect of PbZr_0.4Ti _0.6O₃/PbTiO₃ superlattices via composition tuning

B. Li
, J. B. Wang
, X. L. Zhong
, F. Wang
, B. L. Liu
, X. J. Lou
, Y. C. Zhou

XiangTan University
National University of Singapore

Research output: Contribution to journal › Article › peer-review

14 Scopus citations

Abstract

A thermodynamic model is developed to investigate the electrocaloric effect (ECE) of the PbZr_0.4Ti_0.6O₃/PbTiO₃ ferroelectric superlattices. The ECE of a superlattice consisting of ferroelectric layers A and B with thickness h_A and h_B is calculated as a function of the thickness fraction β_A=h _A/(h_A+h_B). An ECE anomaly could be found at the specific composition. In particular, we found that a maximum adiabatic temperature change (ΔT=5.3 K) appears for the critical thickness of PbTiO₃. This large ECE is attributed to the large change in spontaneous polarization associated with the phase transform, caused by the misfit strain between the ferroelectric sublayers.

Original language	English
Article number	67004
Journal	EPL
Volume	95
Issue number	6
DOIs	https://doi.org/10.1209/0295-5075/95/67004
State	Published - Sep 2011
Externally published	Yes

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title = "Enhancing the electrocaloric effect of PbZr0.4Ti 0.6O3/PbTiO3 superlattices via composition tuning",

abstract = "A thermodynamic model is developed to investigate the electrocaloric effect (ECE) of the PbZr0.4Ti0.6O3/PbTiO3 ferroelectric superlattices. The ECE of a superlattice consisting of ferroelectric layers A and B with thickness hA and hB is calculated as a function of the thickness fraction βA=h A/(hA+hB). An ECE anomaly could be found at the specific composition. In particular, we found that a maximum adiabatic temperature change (ΔT=5.3 K) appears for the critical thickness of PbTiO3. This large ECE is attributed to the large change in spontaneous polarization associated with the phase transform, caused by the misfit strain between the ferroelectric sublayers.",

author = "B. Li and Wang, \{J. B.\} and Zhong, \{X. L.\} and F. Wang and Liu, \{B. L.\} and Lou, \{X. J.\} and Zhou, \{Y. C.\}",

year = "2011",

month = sep,

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language = "英语",

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TY - JOUR

T1 - Enhancing the electrocaloric effect of PbZr0.4Ti 0.6O3/PbTiO3 superlattices via composition tuning

AU - Li, B.

AU - Wang, J. B.

AU - Zhong, X. L.

AU - Wang, F.

AU - Liu, B. L.

AU - Lou, X. J.

AU - Zhou, Y. C.

PY - 2011/9

Y1 - 2011/9

N2 - A thermodynamic model is developed to investigate the electrocaloric effect (ECE) of the PbZr0.4Ti0.6O3/PbTiO3 ferroelectric superlattices. The ECE of a superlattice consisting of ferroelectric layers A and B with thickness hA and hB is calculated as a function of the thickness fraction βA=h A/(hA+hB). An ECE anomaly could be found at the specific composition. In particular, we found that a maximum adiabatic temperature change (ΔT=5.3 K) appears for the critical thickness of PbTiO3. This large ECE is attributed to the large change in spontaneous polarization associated with the phase transform, caused by the misfit strain between the ferroelectric sublayers.

AB - A thermodynamic model is developed to investigate the electrocaloric effect (ECE) of the PbZr0.4Ti0.6O3/PbTiO3 ferroelectric superlattices. The ECE of a superlattice consisting of ferroelectric layers A and B with thickness hA and hB is calculated as a function of the thickness fraction βA=h A/(hA+hB). An ECE anomaly could be found at the specific composition. In particular, we found that a maximum adiabatic temperature change (ΔT=5.3 K) appears for the critical thickness of PbTiO3. This large ECE is attributed to the large change in spontaneous polarization associated with the phase transform, caused by the misfit strain between the ferroelectric sublayers.

UR - https://www.scopus.com/pages/publications/80052975060

U2 - 10.1209/0295-5075/95/67004

DO - 10.1209/0295-5075/95/67004

M3 - 文章

AN - SCOPUS:80052975060

SN - 0295-5075

VL - 95

JO - EPL

JF - EPL

IS - 6

M1 - 67004

ER -

Enhancing the electrocaloric effect of PbZr_0.4Ti _0.6O₃/PbTiO₃ superlattices via composition tuning

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