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American Institute of Physics, Journal of Applied Physics, 12(101), p. 123911

DOI: 10.1063/1.2748723

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Magnetic properties and enhanced magnetic refrigeration in (Mn1-xFex)5Ge3 compounds

Journal article published in 2007 by Q. Zhang, J. Du ORCID, Y. B. Li, N. K. Sun, W. B. Cui, D. Li, Z. D. Zhang
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This paper is available in a repository.

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Abstract

Magnetic and magnetocaloric effects of (Mn1-xFex)5Ge3 compounds are studied systematically. The maximum of magnetic entropy changes of 8.01 J/kg K under an external field change of 5 T is obtained for (Mn0.9Fe0.1)5Ge3, which is the largest value in Mn5Ge3-based solid solutions. Moreover, the Fe substitution increases the refrigeration capacity (RC) value greatly. The largest RC value of 237 J/kg in (Mn0.8Fe0.2)5Ge3 even compares favorably to that of many well-known magnetic refrigeration materials. Thus the Fe-containing (Mn1-xFex)5Ge3 compounds are much-improved magnetic refrigerants for the application of room-temperature magnetic refrigeration. The increase of the RC value is probably resulted from the formation of magnetic nanostructure.