Site selectivity in Fe doped β phase NiAl
作者： Patrick Chartier , Mahalingam Balasubramanian , Dale Brewe , Tariq Manzur , Douglas Pease
DOI: 10.1063/1.356063
关键词: Mössbauer spectroscopy 、 Materials science 、 Stoichiometry 、 Nial 、 Metallurgy 、 Magnetic susceptibility 、 Transition metal 、 Extended X-ray absorption fine structure 、 Crystallography 、 Absorption edge 、 Ternary operation
摘要: We have investigated site selectivity in iron doped β phase ternary alloys of the composition NixFeyAl(100−x−y), where Ni concentration is within a few at. % stoichiometry. Experimental techniques used include extended x‐ray absorption edge fine structure and Mossbauer measurements. The transition metal atoms excess 50 at. %, which occupy sites with nearest neighbors, are not chosen randomly among Fe, but exclusively to accuracy This result requires re‐analysis previous magnetic susceptibility measurements on this system, as re‐analyzed here imply more reasonable moment values for Fe dopants. Our findings regarding significance regards recent studies showing ductilization effect dopants microalloyed into Ni50Al50.
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