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Type: Artigo de evento
Title: Evolution Of The Magnetic Properties Along The Rcubi2 (r=ce, Pr, Nd, Gd, Sm) Series Of Intermetallic Compounds
Author: Jesus C.B.R.
Piva M.M.
Rosa P.F.S.
Adriano C.
Pagliuso P.G.
Abstract: In this paper, the evolution of the magnetic properties along the series of intermetallic compounds RCuBi2 (R=Ce, Pr, Nd, Gd, Sm) is discussed. These compounds crystallize in a tetragonal ZrCuSi2 (P4/nmm) structure, and our single crystals of RCuBi2 grown from Bi-flux show no evidence for Cu-deficiency [Ye et al., Acta Crystallogr. C 52, 1325 (1996)] as previously reported for R=Ce. For R=Ce, Pr, Gd, and Sm, we found an antiferromagnetic ordering at TN ∼16K, 4.2K, 13.6K, and 4.9K, respectively. For R=Nd, we saw no evidence for a magnetic phase transition down to T=2K. These values of TN clearly show a dramatic breakdown of the De Gennes factor in this series. We discuss our data taken into account the tetragonal crystalline electrical field and the anisotropic Ruderman-Kittel- Kasuya-Yoshida magnetic interaction between the R-ions in this family of compounds. © 2014 AIP Publishing LLC.
Editor: American Institute of Physics Inc.
Rights: aberto
Identifier DOI: 10.1063/1.4860657
Date Issue: 2014
Appears in Collections:Unicamp - Artigos e Outros Documentos

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