125 Te and 57 Fe Mössbauer spectroscopy are used to assess the tellurium sublattice and iron clustering in the pseudo two-dimensional structure of 57 Fe-enriched TaFe 1.25 Te 3 . The 125 Te spectrum reveals two quadrupole signals in 1:2 intensity ratio ascribable to two sets of unequivalent tellurium atoms in a highly distorted electronic environment. The basic features of the 57 Fe Mössbauer spectra at 77 and 5 K were accounted for by a Markov chain treatment of short-range ordering (SRO) of iron atoms, while a model based on random distribution fails to describe the complex hyperfine structure of the spectra.
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Pérez-Vicente et al. (1998) studied this question.
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