Abstract
Short range order in an AlCuFe quasicrystal was investigated using the double isotopic substitution of Fe in order to determine partial radial distribution (pair correlation) functions of the system. The experiment was carried out on the 7c2 spectrometer at Orphée designed for studies of atomic local order in liquid and amorphous systems. Very accurate total radial distribution functions were calculated. All the observed pair distances, up to about 10 Å, are consistent with the atomic positions of the model proposed by Cornier-Quiquandon et al. [Phys. Rev. B44 (1991) 2071]. Partial FeFe pair correlation functions have been extracted and show that Fe atoms occupy only a subset of sites.
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