  With the advent of Fe-As based superconductivity it has become important to
study how superconductivity manifests itself in details of 57Fe Mossbauer
spectroscopy of conventional, Fe - bearing superconductors. To this end, the
iron-based superconductor Lu2Fe3Si5 has been studied by 57Fe Mossbauer
spectroscopy over the temperature range from 4.4 K to room temperature with
particular attention to the region close to the superconducting transition
temperature (Tc = 6.1 K). Consistent with the two crystallographic sites for Fe
in this structure, the observed spectra appear to have a pattern consisting of
two doublets over the whole temperature range. The value of Debye temperature
was estimated from temperature dependence of the isomer shift and the total
spectral area and compared with the specific heat capacity data. Neither
abnormal behavior of the hyperfine parameters at or near Tc, nor phonon
softening were observed.
