Physics and Astronomy, Ames Laboratory
Journal or Book Title
Journal of Physics: Condensed Matter
We report measurements of Fe-57 Mossbauer spectra for RFe2Zn20 (R = Lu, Yb, Gd) from similar to 4.5 K to room temperature. The obtained isomer shift values are very similar for all three compounds, their temperature dependence was analyzed within the Debye model and resulted in an estimate of the Debye temperatures of 450-500 K. The values of quadrupole splitting at room temperature change with the cubic lattice constant a in a linear fashion. For GdFe2Zn20, ferromagnetic order is seen as an appearance of a sextet in the spectra. The Fe-57 site hyperfine field for T -> 0 was evaluated to be similar to 2.4 T.
IOP Publishing Ltd
Bud’ko, Sergey L.; Kong, Tai; Ma, Xiaoming; and Canfield, Paul C., "Study of 57Fe Mössbauer effect in RFe2Zn20 (R = Lu, Yb, Gd)" (2015). Physics and Astronomy Publications. 586.