121Sb MOESSBAUER INVESTIGATION OF THE RARE EARTH ANTIMONIDES.

Article abstract of DOI:10.1016/0022-4596(81)90330-3

**1**2**1Sb Moessbauer spectra have been obtained for the series R Sb (R equals La, Ce, Pr, Nd, Sm, Gd, Tb, Dy, Ho, Er, and Yb) at 78 K and for a selection of the compounds at 5. 5 K. At 78 K all the spectra show a single line. The isomer shifts are close to that of InSb and show a linear increase with increasing atomic number of the rare earth ion. Many of the rare earth antimonides exhibit a variety of magnetic and structural phase transitions at a sufficiently low temperature. Spectra obtained at 5. 5 K are interpreted in terms of these phase transitions.