On the crystal structure of the “cage”-like aluminide URu₃Al₁₀

Chem. Met. Alloys 9 (2016) 164-168

https://doi.org/10.30970/cma9.0349

Mathieu PASTUREL, Konrad WOCHOWSKI, Henri NOËL

The novel ternary aluminide URu₃Al₁₀ crystallizes in the orthorhombic (Imma space group) CeRu₃Al₁₀ structure type with cell parameters a = 4.1925(1) Å, b = 12.4173(5) Å and c = 17.5328(6) Å. The combination of (i) short Al-Al and Ru-Al interatomic distances and (ii) long U-Al and U-Ru distances classifies this intermetallic phase as a “cage”-like one, similarly to other Al-rich U-T-Al (T = transition metal) compounds.

View along the a-axis of the “cage”-like URu₃Al₁₀ structure.

Keywords

Uranium aluminide / Cage-like compound / Single crystal X-ray diffraction