Structural Study of a Decagonal Al₇₅Fe₁₅Ni₁₀ Alloy by Anomalous X-ray Scattering (AXS) Method

Abstract

A structural study of an as-quenched decagonal Al 75 Fe 15 Ni 10 alloy has been carried out by anomalous x-ray scattering (AXS) as well as ordinary x-ray diffraction. The environmental radial distribution functions (RDFs) for Fe and Ni determined by the AXS measurements turned out to resemble each other and to be similar to the ordinary RDF obtained by ordinary x-ray diffraction. These results clearly show that the Ni and Fe atoms are homogeneously distributed and occupy the same sites in the decagonal structure of Al 75 Fe 15 Ni 10 .