Variations of structure and magnetic properties in UTGe hydrides (T = late transition metal)

Hydrogenation of UTGe compounds results in formation of stable alpha- and beta-hydrides, and modification of the crystal structure and magnetic properties. T_C = 3 K of UCoGe increases up to 50 K in beta-hydrides and T_C = 9.5 K of URhGe up to 17 K in alpha-hydrides. The type of magnetic order is changed in UNiGe-H and UIrGe-H. The observed effects are attributed to the increased U-U spacing in the hydrides.