Abstract
Mössbauer investigations have been performed for both Fe57 and Sn119 nuclei in FeSn at 5 °K. The numerical analysis of the absorption spectra and calculations of the hyperfine parameters have been made using the GIER computer. It was found that 1/6 of the total number of Fe spins is aligned at an angle of 60° relative to the main spin directions [100] or [210]. The values of the effective field for iron atoms is discussed in terms of the difference in isomer shifts.

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