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Title: Enhanced cooling capacities of ferroelectric materials at morphotropic phase boundaries
Authors: Chukka, Rami
Cheah, Jun Wei
Chen, Zuhuang
Yang, P.
Shannigrahi, S.
Wang, Junling
Chen, Lang
Keywords: DRNTU::Engineering::Materials
Issue Date: 2011
Source: Chukka, R., Cheah, J. W., Chen, Z., Yang, P., Shannigrahi, S., Wang, J., et al. (2011). Enhanced cooling capacities of ferroelectric materials at morphotropic phase boundaries. Applied physics letters, 98(24), 242902-.
Series/Report no.: Applied physics letters
Abstract: The electrocaloric properties of PbZr0.52Ti0.48O3(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 ~260nm PZT films (11 K in 15 V) and 200μm 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.
ISSN: 0003-6951
DOI: 10.1063/1.3595344
Rights: © 2011 American Institute of Physics. This paper was published in Applied Physics Letters and is made available as an electronic reprint (preprint) with permission of American Institute of Physics. The paper can be found at the following official DOI: [].  One print or electronic copy may be made for personal use only. Systematic or multiple reproduction, distribution to multiple locations via electronic or other means, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper is prohibited and is subject to penalties under law.
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:MSE Journal Articles

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