Artículos de revistas
Evolution of the magnetic properties along the RCuBi2 (R=Ce, Pr, Nd, Gd, Sm) series of intermetallic compounds
Registro en:
Journal Of Applied Physics. Amer Inst Physics, v. 115, n. 17, 2014.
0021-8979
1089-7550
WOS:000335643700488
10.1063/1.4860657
Autor
Jesus, CBR
Piva, MM
Rosa, PFS
Adriano, C
Pagliuso, PG
Institución
Resumen
Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP) Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES) 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. 115 17 Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP) Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES) FINEP-Brazil Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP) Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES) FAPESP [2012/04870-7, 2006/60440-0, 2009/09247-3, 2010/11949-3, 2011/01564-0, 2011/23650-5, 2012/05903-6]