Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
9804201 | Journal of Alloys and Compounds | 2005 | 6 Pages |
Abstract
NpRhGa5 develops antiferromagnetic order below TN = 37 K. Contrary to its NpCoGa5 counterpart, NpRhGa5 does not show any phase transition in applied magnetic fields up to 9 T, but undergoes a second magnetic transition-attributed to a reorientation of the magnetic moments from the c-axis to the basal plane-at Tâ = 32 K, as evidenced by magnetization, resistivity, specific heat and 237Np Mössbauer data. The latter also indicates the occurrence of a Np3+ charge state and an ordered Np moment of 0.96 μB. The comparison of the magnetic properties of NpRhGa5 and AnTGa5 (An = U, Np, Pu; T = Co, Rh) compounds confirms that AnRhGa5 and AnCoGa5 are driven by common underlying physics and shows that magnetic interactions are enhanced in AnCoGa5 compounds, suggesting a possible link with the enhanced superconductivity in PuCoGa5 compared to PuRhGa5.
Related Topics
Physical Sciences and Engineering
Materials Science
Metals and Alloys
Authors
E. Colineau, F. Wastin, P. Boulet, P. Javorský, J. Rebizant, J.P. Sanchez,