Please use this identifier to cite or link to this item: https://doi.org/10.1209/0295-5075/95/67004
Title: Enhancing the electrocaloric effect of PbZr0.4Ti 0.6O3/PbTiO3 superlattices via composition tuning
Authors: Li, B.
Wang, J.B.
Zhong, X.L.
Wang, F.
Liu, B.L.
Lou, X.J. 
Zhou, Y.C.
Issue Date: Sep-2011
Citation: Li, B., Wang, J.B., Zhong, X.L., Wang, F., Liu, B.L., Lou, X.J., Zhou, Y.C. (2011-09). Enhancing the electrocaloric effect of PbZr0.4Ti 0.6O3/PbTiO3 superlattices via composition tuning. EPL 95 (6) : -. ScholarBank@NUS Repository. https://doi.org/10.1209/0295-5075/95/67004
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. © Europhysics Letters Association.
Source Title: EPL
URI: http://scholarbank.nus.edu.sg/handle/10635/86309
ISSN: 02955075
DOI: 10.1209/0295-5075/95/67004
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