Giant Negative Electrocaloric Effect in Antiferroelectric La-Doped Pb(ZrTi)O3 Thin Films Near Room Temperature

Wenping Geng; Yang Liu; Xiangjian Meng; Laurent Bellaiche; James F Scott; Brahim Dkhil; Anquan Jiang

doi:10.1002/adma.201501100

Giant Negative Electrocaloric Effect in Antiferroelectric La-Doped Pb(ZrTi)O3 Thin Films Near Room Temperature

Adv Mater. 2015 May 27;27(20):3165-9. doi: 10.1002/adma.201501100. Epub 2015 Apr 11.

Authors

Wenping Geng¹, Yang Liu^{1

2}, Xiangjian Meng^{3

4}, Laurent Bellaiche⁵, James F Scott^{6

7}, Brahim Dkhil², Anquan Jiang¹

Affiliations

¹ State Key Laboratory of ASIC and System, School of Microelectronics, Fudan University, Shanghai, 200433, PR China.
² Laboratoire Structures, Propriétés et Modélisation des Solides, Université Paris-Saclay, CentraleSupélec, CNRS-UMR8580, Grande Voie des Vignes, Châtenay-Malabry, Cedex, 92295, France.
³ National Laboratory for Infrared Physics, Shanghai Institute of Technical Physics, Chinese Academy of Sciences, Yu Tian Road 500, Shanghai, 200083, PR China.
⁴ University of Chinese Academy of Sciences, No. 19A Yuquan Road, Beijing, 100049, PR China.
⁵ Physics Department and Institute for Nanoscience and Engineering, University of Arkansas, Fayetteville, AR, 72701, USA.
⁶ Department of Physics Cavendish Laboratory, University of Cambridge, Cambridge, CB3 0HE, UK.
⁷ Departments of Chemistry and Physics, St. Andrews University, St. Andrews, KY16 9ST, UK.

PMID: 25864588
DOI: 10.1002/adma.201501100

Abstract

Antiferroelectric thin films are demonstrated as a new class of giant electrocaloric materials that exhibit a negative electrocaloric response of about -5 K near room temperature. The giant negative electrocaloric effect may open up a new paradigm for light, compact, reliable, and high-efficiency refrigeration devices.

Keywords: antiferroelectric thin films; negative electrocaloric effect; solid-state cooling.