Evolution of the magnetic properties along the RCuBi2 (R=Ce, Pr, Nd, Gd, Sm) series of intermetallic compounds

Author(s)

Jesus, C. B. R. ^[1] ; Piva, M. M. ^[1] ; Rosa, P. F. S. ^[1] ; Adriano, C. ^[1] ; Pagliuso, P. G. ^[1]

Affiliation

^[1] Univ Estadual Campinas, Inst Fis Gleb Wataghin, BR-13083859 Campinas, SP - Brazil

• Document type: Journal article
• Source: Journal of Applied Physics; v. 115, n. 17 MAY 7 2014.
• Web of Science Citations: 8

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. (AU)

• FAPESP's process: 09/09247-3 - Investigation of pressure induced ordered states in novel complex materials.
• Grantee: Cris Adriano
• Support Opportunities: Scholarships in Brazil - Post-Doctoral
• FAPESP's process: 12/04870-7 - Studies of novel complex and advanced materials
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• Grantee: Pascoal Jose Giglio Pagliuso
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• Grantee: Cris Adriano
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