Magnetic, transport and Mössbauer effect study of UFeAl

We present the results of magnetic susceptibility, electrical resistivity and Mössbauer effect measurements performed on two crystallographic structures of UFeAl: high-temperature (HT) and low-temperature (LT) phases, i.e. MgZn₂ and Fe₂P-type structures respectively.

The exchange-enhanced Pauli susceptibility and spin-fluctuation characteristics of the temperature dependence of the electrical resistivity of UFeAl are almost independent of the type of crystal structure.

⁵⁷Fe Mössbauer spectra of both crystallographic phases of UFeAl, recorded in the temperature range 10–295 K, consist of two symmetric quadrupole doublets for each crystal structure associated with the non-equivalent crystallographic positions of Fe. The Debye temperatures for the HT and LT structures of UFeAl were also estimated.