Havela, L. ; Miliyanchuk, K. ; Kolomiets, A.V. ; Pereira, L.C.J. ; Gonçalves, A.P.; Santav, E. ; Prokes, K.: 5f magnetism studied in complex intermetallic U-based hydrides. Journal of Alloys and Compounds 446-447 (2007), p. 606-609
Abstract:
Hydrogen absorption in uranium ternary intermetallic compounds typically increases ordering temperatures and magnetic moments. The case of URuSn hydride, which does not behave accordingly, can be related to specific H positions revealed by neutron diffraction on deuterides. Tuning through the onset of magnetic ordering by means of H absorption was found for the U2T2X compounds as U2Co2Sn. For U2Ni2SnD1.8, we demonstrated that the anisotropic lattice expansion leads to U moments reorientation, as a result of hybridisation-induced two-ion anisotropy, with respect to U2Ni2Sn, in which the UU coordination is poised between two regimes.