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Type: Artigo de evento
Title: Experimental Study Of The Magnetocaloric Effect In Gd5sn 2si2 Compound
Author: Campoy J.C.P.
Plaza E.J.R.
Magnus A.
Carvalho G.
Coelho A.A.
Gama S.
Von Ranke P.J.
Abstract: We report an experimental study of the magnetocaloric effect (MCE) in the Gd5Sn2Si2 compound. The MCE ΔS mag(T) as a function of temperature is obtained from magnetization M(H, T) measurements up to 5 T. A second order magnetic transition is observed at TC ∼ 220 K with ΔSmag = 4.5 J/mol K. T c and transition width ΔTc depends on thermal treatments for homogeneity and crystallographic ordering. At low temperatures, T ∼ 87K, we also observed a second peak in ΔSmag which is associated with the presence of antiferromagnetic Gd5Sn 4-xSix. © 2004 Elsevier B.V. All rights reserved.
Rights: fechado
Identifier DOI: 10.1016/j.jmmm.2003.12.1010
Date Issue: 2004
Appears in Collections:Unicamp - Artigos e Outros Documentos

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