Large electrocaloric effect in highly (001)-oriented 0.67PbMg1/3Nb2/3O3-0.33PbTiO3 thin films

被引：40

作者：

Feng, Zuyong ^{[1
]}

Shi, Dongqi ^{[1
]}

Dou, Shixue ^{[1
]}

机构：

[1] Univ Wollongong, Inst Superconducting & Elect Mat, Wollongong, NSW 2522, Australia

来源：

SOLID STATE COMMUNICATIONS | 2011年 / 151卷 / 02期

基金：

澳大利亚研究理事会;

关键词：

Ferroelectrics; Thin films; Electrocaloric effect; Sputtering; PYROELECTRIC PROPERTIES; CRYSTALS;

D O I：

10.1016/j.ssc.2010.11.010

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

(001)-oriented 0.67PbMg(1/3)Nb(2/3)O(3)-0.33PbTiO(3) thin films with a pure perovskite crystalline phase were deposited on LaNiO(3)-coated SiO(2)/Si substrates by the rf magnetron sputtering technique. We found that the as-grown thin films with (001)-oriented texture possess not only excellent dielectric and ferroelectric properties but also a large electrocaloric effect (14.5 K in 12 V, i.e., 1.21 K/V) which is attributed to the large polarization and entropy change during the ferroelectric-paraelectric phase transition at a high electric field. The discovery of the large electrocaloric effect in highly textured ferroelectric thin films widens their potential applications, such as in solid-state electrical refrigeration. (C) 2010 Elsevier Ltd. All rights reserved.

引用

页码：123 / 126

页数：4

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