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Type: Artigo de periódico
Title: Magnetic Structure Of Ho2 Coga8 Determined By X-ray Resonant Magnetic Scattering
Author: Adriano C.
Giles C.
Coelho L.N.
Faria G.A.
Pagliuso P.G.
Abstract: We report the low temperature magnetic structure of the Ho2 CoGa8 intermetallic compound studied by X-ray magnetic scattering technique at the Brazilian Synchrotron Light Laboratory. We found that below TN = 5.1 K, Ho2 CoGa8 has a commensurate antiferromagnetic structure with a propagation vector over(η, ⇒) = (frac(1, 2), frac(1, 2), frac(1, 2)) and preliminary analysis indicated that the Ho magnetic moment points along the c-axis. The magnetic structure of this compound was obtained by measuring the strong dipolar resonant peak at the L3 edge using polarization analysis. The magnetic structure and properties Ho2 CoGa8 are found to be consistent with the general trend already seen for the Nd-, Tb-, and the Ce-based compounds from the Rm Mn In3 m + 2 n family (R=rare earth; M=Co, Rh, or Ir; m = 1, 2; n = 0, 1). © 2009 Elsevier B.V. All rights reserved.
Rights: fechado
Identifier DOI: 10.1016/j.physb.2009.07.127
Date Issue: 2009
Appears in Collections:Unicamp - Artigos e Outros Documentos

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