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Accurate determination of the magnetocaloric parameters of LaFeCoSi compounds.

Number: 1611

Author(s) : BURRIEL R., SAZATORNIL M., PALACIOS E.

Summary

Four samples of magnetocaloric compounds of general formula La(Fe,Co,Si)13 with transition temperatures between 253 K and 307 K have been characterized. A precise determination has been obtained for the adiabatic temperature increment, delta-T(ad), and the isothermal entropy change, delta-S(r), under various field changes between 0 and 5 Tesla. Field dependent heat capacities have been measured with adiabatic calorimetry. Direct measurements of deltaSt and delta-T(ad) have been done under quasistatic field changes. Results from the entropy derived functions have also been used for indirect determinations of the magnetocaloric parameters. The results from direct and indirect determinations give an excellent match and also agree with the values of delta-S(T) derived from magnetization measurements.

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Details

  • Original title: Accurate determination of the magnetocaloric parameters of LaFeCoSi compounds.
  • Record ID : 30013126
  • Languages: English
  • Source: 6th International Conference on Magnetic Refrigeration at Room Temperature (Thermag VI). Proceedings: Victoria, Canada, September 7-10, 2014.
  • Publication date: 2014/09/07

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