Enhanced cooling capacities of ferroelectric materials at morphotropic phase boundaries

Please use this identifier to cite or link to this item: https://doi.org/10.1063/1.3595344

Title:	Enhanced cooling capacities of ferroelectric materials at morphotropic phase boundaries
Authors:	Chukka, R. Cheah, J.W. Chen, Z. Yang, P. Shannigrahi, S. Wang, J. Chen, L.
Issue Date:	13-Jun-2011
Citation:	Chukka, R., Cheah, J.W., Chen, Z., Yang, P., Shannigrahi, S., Wang, J., Chen, L. (2011-06-13). Enhanced cooling capacities of ferroelectric materials at morphotropic phase boundaries. Applied Physics Letters 98 (24) : -. ScholarBank@NUS Repository. https://doi.org/10.1063/1.3595344
Abstract:	The electrocaloric properties of PbZr0.52Ti0.48O 3 (PZT) epitaxial films and 0.7Pb (Mg1/3Nb2/3) O3-0.3PbTiO3 (0.7PMN-0.3PT) single crystals are measured and demonstrated enhanced low temperature refrigeration at morphotropic phase boundary compositions. The results reveal large adiabatic cooling figures in ∼260 nm PZT films (11 K in 15 V) and 200 μm thick 0.7PMN-0.3PT single crystals (2.7 K in 240 V) at Curie transition temperatures and secondary cooling peaks at lower temperatures, near critical points. This is a very useful aspect of ferroelectric cooling elements to attain effective cooling over wide range of working temperatures in solid-state devices. © 2011 American Institute of Physics.
Source Title:	Applied Physics Letters
URI:	http://scholarbank.nus.edu.sg/handle/10635/113014
ISSN:	00036951
DOI:	10.1063/1.3595344
Appears in Collections:	Staff Publications

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