电场控制磁热效应。

Electric field control of the magnetocaloric effect.

机构信息

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.

出版信息

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

DOI:10.1002/adma.201404725

PMID:25522356

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.

摘要

通过应变介导的磁电耦合，证明了铁磁形状记忆合金的磁热效应可以通过电场来控制。通过在包含压电体和合金的层压板上施加电场，有效地克服了大滞后和有限的工作温度区域。因此，原则上提出了一种具有高效率的主动磁制冷器模型。