Physical properties and magnetic structure of the intermetallic CeCuBi2 compound

Author(s):Show less -

Adriano, C. ; Rosa, P. F. S. ; Jesus, C. B. R. ; Mardegan, J. R. L. ; Garitezi, T. M. ; Grant, T. ; Fisk, Z. ; Garcia, D. J. ; Reyes, A. P. ; Kuhns, P. L. ; Urbano, R. R. ; Giles, C. ; Pagliuso, P. G.

• Document type: Journal article
• Source: PHYSICAL REVIEW B; v. 90, n. 23, p. 7-pg., 2014-12-10.

Abstract

In this work we combine magnetization, pressure dependent electrical resistivity, heat capacity, Cu-63 nuclear magnetic resonance (NMR), and x-ray resonant magnetic scattering experiments to investigate the physical properties of the intermetallic CeCuBi2 compound. Our single crystals show an antiferromagnetic ordering at T-N = 16 K and the magnetic properties indicate that this compound is an Ising antiferromagnet. In particular, the low temperature magnetization data revealed a spin-flop transition at T = 5 K when magnetic fields of about 5.5 T are applied along the c axis. Moreover, the x-ray magnetic diffraction data below TN revealed a commensurate antiferromagnetic structure with propagation wave vector (001/2) with the Ce3+ moments oriented along the c axis. Furthermore, our heat capacity, pressure dependent resistivity, and temperature dependent Cu-63 NMR data suggest that CeCuBi2 exhibits a weak heavy fermion behavior with strongly localized Ce3+ 4f electrons. We thus discuss a scenario in which both the anisotropic magnetic interactions between the Ce3+ ions and the tetragonal crystalline electric field effects are taking into account in CeCuBi2. (AU)

• FAPESP's process: 11/23650-5 - Investigation of band structure and Fermi surface in advanced complex materials studied by angle-resolved photoemission spectroscopy
• Grantee: Cris Adriano
• Support Opportunities: Scholarships abroad - Research Internship - Post-doctor
• FAPESP's process: 12/04870-7 - Studies of novel complex and advanced materials
• Grantee: Pascoal Jose Giglio Pagliuso
• Support Opportunities: Research Projects - Thematic Grants
• FAPESP's process: 12/05903-6 - Nuclear magnetic resonance of novel complex and advanced materials in condensed matter physics
• Grantee: Ricardo Rodrigues Urbano
• Support Opportunities: Research Grants - Young Investigators Grants
• 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: 09/10264-0 - Study of intermetalic compounds for thermoelectrical applications by x-ray diffraction
• Grantee: José Renato Linares Mardegan
• Support Opportunities: Scholarships in Brazil - Doctorate
• FAPESP's process: 11/01564-0 - Materials sciences on complex and advanced systems
• Grantee: Pascoal Jose Giglio Pagliuso
• Support Opportunities: Scholarships abroad - Research
• FAPESP's process: 11/19924-2 - Study and development of advanced novel materials: electronic, magnetic and nanostructured: an interdisciplinary approach
• Grantee: Carlos Rettori
• Support Opportunities: Research Projects - Thematic Grants
• FAPESP's process: 13/20181-0 - Evolution of topological Kondo insulating behavior in Sm1xRxB6 (r = Sr, Yb)
• Grantee: Priscila Ferrari Silveira Rosa
• Support Opportunities: Scholarships abroad - Research Internship - Post-doctor