Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/92580
Type: Artigo de periódico
Title: Magnetic Coupling Between Gd And Pr Ions And Magnetocaloric Effect In Gd0.5pr0.5al2 Compound
Author: Carvalho A.M.G.
Garcia F.
de Sousa V.S.R.
von Ranke P.J.
Rocco D.L.
Loula G.D.
de Carvalho E.J.
Coelho A.A.
da Silva L.M.
Gandra F.C.G.
Abstract: In this work, we report the theoretical and experimental investigations on the magnetic and magnetocaloric properties for Gd0.5Pr0.5Al2 compound in different magnetic fields. The magnetization features indicate that Gd0.5Pr0.5Al2 is ferrimagnetic at low temperatures. We also present data from X-ray magnetic circular dichroism (XMCD) experiments for this compound, with which we have confirmed that the magnetic moments of the Pr ions are antiparallel to the magnetic moments of the Gd ions. The magnetocaloric parameters, ΔTS and ΔST, were obtained from calorimetric data and both curves present normal and inverse magnetocaloric effect. A theoretical model for ferrimagnetic coupling, including the crystalline electrical field anisotropy, was used to describe the ΔTS and ΔST experimental results. © 2009 Elsevier B.V. All rights reserved.
Editor: 
Rights: fechado
Identifier DOI: 10.1016/j.jmmm.2009.04.068
Address: http://www.scopus.com/inward/record.url?eid=2-s2.0-67650161828&partnerID=40&md5=e4b3b4c1bf4365d491946a4bc37c2e24
Date Issue: 2009
Appears in Collections:Unicamp - Artigos e Outros Documentos

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