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|Type:||Artigo de periódico|
|Title:||Evolution of the magnetic properties along the RCuBi2 (R=Ce, Pr, Nd, Gd, Sm) series of intermetallic compounds|
|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 T-N similar to 16 K, 4.2 K, 13.6 K, and 4.9 K, 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. VC 2014 AIP Publishing LLC.|
|Editor:||Amer Inst Physics|
|Appears in Collections:||Unicamp - Artigos e Outros Documentos|
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