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Giant electrocaloric effect in the thin film relaxor ferroelectric 0.9 PbMg_(1/3)Nb_(2/3)O_3 - 0.1 PbTiO_3 near room temperature

A. S. Mischenko·Q. Zhang·R. W. Whatmore·N. D. Mathur
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Abstract

We have recently observed a giant electrocaloric effect (12 K in 25 V) in 350 nm sol-gel Pb Zr_0.95 Ti_0.05 O_3 films near the ferroelectric Curie temperature of 242oC. Here we demonstrate a giant electrocaloric effect (5 K in 25 V) in 260 nm sol-gel films of the relaxor ferroelectric 0.9 PbMg_(1/3)Nb_(2/3)O_3 - 0.1 PbTiO_3 near the Curie temperature of 60oC. This reduction in operating temperature widens the potential for applications in novel cooling systems.

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A. S. Mischenko, Q. Zhang, R. W. Whatmore, N. D. Mathur. 2006-04-11. Giant electrocaloric effect in the thin film relaxor ferroelectric 0.9 PbMg_(1/3)Nb_(2/3)O_3 - 0.1 PbTiO_3 near room temperature. https://doi.org/10.1063/1.2405889

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