Enhancing the electrocaloric effect of PbZr0.4Ti0.6O3/PbTiO3 superlattices via composition tuningB. Li, J. B. Wang, X. L. Zhong, F. Wang, B. L. Liu, X. J. Lou and Y. C. ZhouEPL, 95 6 (2011) 67004DOI: https://doi.org/10.1209/0295-5075/95/67004