Giant negative electrocaloric effect in antiferroelectric LaDoped Pb(ZrTi)O3 thin films near room temperature

Wenping Geng (1) , Liu Yang (2) , Meng Xiangjian (3) , Laurent Bellaiche (4) , James F. Scott (5) , Brahim Dkhil (2) , Anquan Jiang (1)

1 School of Microelectronics, Fudan University
2 SPMS - Laboratoire Structures, Propriétés et Modélisation des solides
3 UCAS - Graduate University of Chinese [Beijing]
4 Institute for nanosciences and engineering and physics departement [University of Arkansas]
5 Department of Physics, Cavendish Laboratory

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.

Domaines: Science des matériaux [cond-mat.mtrl-sci]

Wenping Geng, Liu Yang, Meng Xiangjian, Laurent Bellaiche, James F. Scott, et al.. Giant negative electrocaloric effect in antiferroelectric LaDoped Pb(ZrTi)O3 thin films near room temperature. Advanced Materials, 2015, ⟨10.1002/adma.201501100⟩. ⟨hal-01263032⟩