NUKLEONIKA 2007, 52(Supplement 1):S67-S69
Dariusz Satuła1, Krzysztof Szymański1, Vinh H. Tran2, Ludwik Dobrzyński1,3
1 Institute of Experimental Physics,
University of Białystok, 41 Lipowa Str., 15-424 Białystok, Poland
2 W. Trzebiatowski Institute of Low Temperature
and Structure Research, Polish Academy of Sciences,
50-950 Wrocław, P.O. Box 937, Poland
3 The Andrzej Sołtan Institute for Nuclear Studies,
05-400 Otwock-Świerk, Poland
Local hyperfine interactions on Fe nuclei in UFe5Sn compound were determined in Mössbauer
experiment. The analysis of the Mössbauer spectra measured at room temperature reveals the presence
of two doublets only. Absorption line width indicates that neither distribution of quadrupole splitting
nor isomer shift exists in the alloy. The measurements at 13 K show the presence of four magnetic
components. Because the magnetic dipole and electric quadrupole interactions are present, full
Hamiltonian was used to determine the hyperfine interactions for each iron site. Electric field
gradient determined at low temperatures agrees with quadrupole splitting observed at room temperature.
Absorption areas of the components at low and at high temperatures correspond well to the occupation
of the crystal sites by Fe atoms.