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|Type:||Artigo de periódico|
|Title:||Magnetocaloric Effect And Transport Properties Of Gd5ge2(si1-xsnx)2 (x=0.23 And 0.40) Compounds|
|Abstract:||We report a study about the structural properties of polycrystalline samples of nominal composition Gd5Ge2(Si1-xSnx)2 (x=0.23, 0.40) that closely influence their physical behavior particularly related to electric resistivity and magnetocaloric (MCE) effect. The samples were characterized by X-ray diffraction (XRD) using the Rietveld refinement method, metallographic analyses, 119Sn Mössbauer spectroscopy, DC magnetization and electrical transport measurements. It was identified a Gd5Si2Ge2-monoclinic phase for x=0.23 and a Sm5Sn4-orthorhombic phase (type II) for x=0.40, both with two non-equivalent crystallographic sites for the Sn ions. We were able to infer on the role of tin on the magnetic and transport properties in these compounds. © 2007 Elsevier B.V. All rights reserved.|
|Appears in Collections:||Unicamp - Artigos e Outros Documentos|
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