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Magnetic properties and large isothermal entropy change in Mn(2-x)Fe(x)P(0.6)Si(0.25)Ge(0.15) compounds.

Author(s) : WANG G. F., PALACIOS E., BURRIEL R., et al.

Summary

The authors have reported the structural, magnetic and magnetocaloric properties of these compounds with x= 0.7, 0.8, 0.9, and 1.0. XRD powder patterns confirm that the samples crystallize mainly in Fe2P-type hexagonal structure, and contain a small amount of MnFe(2)Si(delta)Ge(1-delta) as an impurity. Both, the Curie temperature and saturation magnetization decrease with increasing Mn concentration. The maximum values of isothermal entropy change are 8.9, 14.9, 22.2 and 22.4 J/kg.K for x= 0.7, 0.8, 0.9, and 1.0 under a field change of 9 T, respectively. The large MCE and the broad range of working temperatures indicate that these materials are promising candidates as working refrigerants for room-temperature magnetic refrigeration.

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Pages: 2010-4

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Details

  • Original title: Magnetic properties and large isothermal entropy change in Mn(2-x)Fe(x)P(0.6)Si(0.25)Ge(0.15) compounds.
  • Record ID : 2011-0183
  • Languages: English
  • Source: 4th International Conference on Magnetic Refrigeration at Room Temperature (Thermag IV). Proceedings: Baotou, China, August 23-27, 2010.
  • Publication date: 2010/08/23

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