Abstract
Fe-containing Y 2Fe 3Si 5 and Sc 2Fe 3Si 5 have unusual superconducting and related properties. Relevant to this study is their anomalous magnetic susceptibility, which undergoes a maximum near 100 K. Among the various explanations yet to be verified is spin-glass formation. However, Mössbauer measurements rule out this possibility, since paramagnetic behavior remains from 295 down to 4.2 K as revealed by a simple quadrupole splitting in the spectra in these ternary compounds.
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