Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
8156062 | Journal of Magnetism and Magnetic Materials | 2015 | 6 Pages |
Abstract
We report on the single crystal properties of the novel U2RhIn8 compound studied in the context of parent URhIn5 and UIn3 systems. The compounds were prepared by In self-flux method. U2RhIn8 adopts the Ho2CoGa8-type structure with lattice parameters a=4.6056(6)Â Ã
and c=11.9911(15)Â Ã
. The behavior of U2RhIn8 strongly resembles that of the related URhIn5 and UIn3 with respect to magnetization, specific heat and resistivity except for magnetocrystalline anisotropy developing with lowering dimensionality in the series UIn3 vs. U2RhIn8 and URhIn5. U2RhIn8 orders antiferromagnetically below TN=117 K and exhibits a slightly enhanced Sommerfeld coefficient γ=47 mJ molâ1 Kâ2. Magnetic field leaves the value of Néel temperature for both URhIn5 and U2RhIn8 unaffected up to 9 T. On the other hand, TN is increasing when applying hydrostatic pressure up to 3.2 GPa. The character of uranium 5f electron states of U2RhIn8 was studied by first principles calculations based on the density functional theory. The overall phase diagram of U2RhIn8 is discussed in the context of magnetism in the related URhX5 and UX3 (X=In, Ga) compounds.
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Condensed Matter Physics
Authors
Attila Bartha, M. KratochvÃlová, M. DuÅ¡ek, M. DiviÅ¡, J. Custers, V. Sechovský,