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Direct measurements of magnetocaloric effect in the first-order system LaFe11.7Si1.3

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9 Author(s)
Hu, F.X. ; State Key Laboratory of Magnetism, Institute of Physics and Center of Condensed Matter Physics, Chinese Academy of Sciences, Beijing 100080, People’s Republic of China and Department of Physics, Capital Normal University, Beijing 100037, People’s Republic of China ; Ilyn, Max ; Tishin, A.M. ; Sun, J.R.
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The magnetocaloric effect was investigated in LaFe11.7Si1.3, which undergoes a first-order transition at ∼188 K from the ferromagnetic to paramagnetic state. The magnetic entropy change upon a field increase from 0 to 5 T is as large as 29 J/kg K (212 mJ/cm3K). The adiabatic temperature change obtained via direct measurements reaches 4 K under a field change from 0 to 1.4 T. The large values of entropy change and adiabatic temperature change confirmed the large potential of present compound LaFe11.7Si1.3 as a magnetic refrigerant in the corresponding temperature range. © 2003 American Institute of Physics.

Published in:

Journal of Applied Physics  (Volume:93 ,  Issue: 9 )

Date of Publication:

May 2003

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