The Structure of an Al-Ni-Ru Monoclinic Phase Al 13 (Ru,Ni) 4

The structure of a Ni-substituted Al 13 (Ru,Ni) 4 phase was analyzed by single crystal X-ray diffraction. The present analysis revealed the distribution of Ni at five heavy metal sites of Ru/Ni(1), Ru/Ni(2), Ru/Ni(3), Ru/Ni(4) and Ru/Ni(5). The anisotropic contraction of the corresponding coordination polyhedra around heavy metal sites was also suggested together with a variation of lattice constants as a function of Ni content