Electric field control of the magnetocaloric effect

Yuan-Yuan Gong; Dun-Hui Wang; Qing-Qi Cao; En-Ke Liu; Jian Liu; You-Wei Du

doi:10.1002/adma.201404725

Electric field control of the magnetocaloric effect

Adv Mater. 2015 Feb 4;27(5):801-5. doi: 10.1002/adma.201404725. Epub 2014 Dec 17.

Authors

Yuan-Yuan Gong¹, Dun-Hui Wang, Qing-Qi Cao, En-Ke Liu, Jian Liu, You-Wei Du

Affiliation

¹ National Laboratory of Solid State Microstructures & Jiangsu Key Laboratory for Nano Technology, Department of Physics, Nanjing University, Nanjing, 210093, P.R. China; Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing, 210093, P.R. China.

PMID: 25522356
DOI: 10.1002/adma.201404725

Abstract

Through strain-mediated magnetoelectric coupling, it is demonstrated that the magnetocaloric effect of a ferromagnetic shape-memory alloy can be controlled by an electric field. Large hysteresis and the limited operating temperature region are effectively overcome by applying an electric field on a laminate comprising a piezoelectric and the alloy. Accordingly, a model for an active magnetic refrigerator with high efficiency is proposed in principle.

Keywords: active magnetic refrigerator; ferromagnetic shape memory alloy; magnetocaloric effect; magnetoelectric effect.