摘要：Polycrystalline LiGa
2Ir has been prepared by a solid state reaction method. A Rietveld refinement of powder x-ray diffraction data confirms a previously reported Heusler-type crystal structure (space group
Fm-3m, No. 225) with lattice parameter
a = 6.0322(1) Å. The normal and superconducting state properties were studied by magnetic susceptibility, heat capacity, and electrical resistivity techniques. A bulk superconductivity with T
c = 2.94 K was confirmed by detailed heat capacity studies. The measurements indicate that LiGa
2Ir is a weak-coupling type-II superconductor (
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