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A Pathway to Optimize the Properties of Magnetocaloric Mn2-xFexP1-yGey) for Magnetic Refrigeration

Published

Author(s)

D. M. Liu, Z. L. Zhang, S. L. Zhou, Qingzhen Huang, X. J. Deng, M. Yue, C. X. Liu, J. X. Zhang, Jeffrey W. Lynn

Abstract

Magnetocaloric materials can be useful in magnetic refrigeration applications, but to be practical the magnetorefrigerant needs to have a very large magnetocaloric effect (MCE) near room temperature for modest applied fields (xFe2-xP1-yGey, and we have used neutron diffraction, differential scanning calorimetry, and magnetization measurements to study the effects of both crystallite size and Mn and Ge location in the structure on the ordered magnetic moment, MCE, and hysteresis of the material. We reveal how to tune the properties, and show that Fe0.83Mnd0.17^(P0.74Ge02.6) has a giant magnetocaloric effect (MCE) (35.5-1 K-1) near room temperature and in low magnetic fields (hys(
Citation
Journal of Alloys and Compounds
Volume
666

Keywords

Magnetic Refrigeration, Magnetocaloric, Neutron diffraction, crystal structure, magnetic phase transition, Ferromagnet, Giant Entropy, magnetization
Created February 29, 2016, Updated February 19, 2017