Magnetic entropy change in Fe-based compound LaFe[sub 10.6]Si[sub 2.4]

Zhang, X. X.; Zhang, X.X.; Wen, G. H.; Wen, G.H.; Wang, F. W.; Wang, F.W.; Wang, W. H.; Wang, W.H.; Yu, C. H.; Yu, C.H.; Wu, G. H.; Wu, G.H.
November 2000
Applied Physics Letters;11/6/2000, Vol. 77 Issue 19
Academic Journal
A large magnetic entropy change has been observed in an intermetallic compound LaFe[sub 10.6]Si[sub 2.4]. The maximum -ΔS[sub M]approx. 3.2 J/kg K was found at its Curie temperature, ∼242 K, upon a 2 T magnetic field change. Although the entropy change is slightly smaller than that of pure Gd metal, such Fe-rich compounds still appear to be very attractive candidates since (a) the raw materials are much cheaper than pure Gd metal; (b) the Curie temperature can be easily shifted by tuning the composition; (c) the materials are much more chemically stable than pure Gd metal. © 2000 American Institute of Physics.


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