Physical properties and magnetic structure of the intermetallic CeCuBi2 compound
| Autor: | Adriano, C., Rosa, P. F. S., Jesus, C. B. R., Madergan, 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. |
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| Rok vydání: | 2014 |
| Předmět: | |
| Zdroj: | Phys. Rev. B 90, 235120 (2014) |
| Druh dokumentu: | Working Paper |
| DOI: | 10.1103/PhysRevB.90.235120 |
| Popis: | In this work, we combined magnetization, pressure dependent electrical resistivity, heat-capacity, 63Cu 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 TN ~ 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 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 wavevector (0 0 1/2) with the Ce^3+ moments oriented along the c-axis. Furthermore, our heat capacity, pressure dependent resistivity and temperature dependent 63Cu NMR data suggest that CeCuBi2 exhibits a weak heavy fermion behavior with strongly localized Ce^3+ 4f electrons. We thus discuss a scenario taking into account the anisotropic magnetic interaction between the Ce^3+ ions along with the tetragonal crystalline electric field effects in CeCuBi2. Comment: 8 pages, 7 figures |
| Databáze: | arXiv |
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