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Type: Artigo de periódico
Title: Structural Distortion And Magnetic Order In The Intermetallic Eu 3ir4sn13 Compound
Author: Mardegan J.R.L.
Aliouane N.
Coelho L.N.
Aguero O.
Bittar E.M.
Lang J.C.
Pagliuso P.G.
Torriani I.L.
Giles C.
Abstract: In this work, we have investigated the low temperature structural distortion and magnetic properties of the Eu3Ir4Sn 13 Remeika cubic phase compound using X-ray powder diffraction (XRD), X-ray resonant magnetic scattering (XRMS) and neutron diffraction. X-ray scattering revealed that the peak observed in electrical resistivity and heat capacity measurements is related to a structural distortion at T*=57.1 K. This crystallographic distortion characterized by the arising of a propagation vector q=(0,(1/2),(1/2)) is due to a displacement of the Sn ions at the Sn1Sn212 polyhedron. In addition, the neutron diffraction experiments performed on a single crystal of Eu3Ir4Sn13 exhibit an antiferromagnetic coupling below TN=10.1 K where we observe a commensurate magnetic propagation vector τ=(0,(1/2),(1/2)) identical to the one observed for the structural distortion. © 1965-2012 IEEE.
Rights: fechado
Identifier DOI: 10.1109/TMAG.2013.2255589
Date Issue: 2013
Appears in Collections:Unicamp - Artigos e Outros Documentos

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