J. Przewoznik et al., MOSSBAUER STUDIES OF C15 RMN2 COMPOUNDS - CRITICAL DISTANCE VERSUS CRITICAL-FIELD MODEL, Nuclear instruments & methods in physics research. Section B, Beam interactions with materials and atoms, 76(1-4), 1993, pp. 130-131
RMn2 compounds (R = Gd, Tb, Dy, Ho and Y) with Mn atoms substituted to
0.5% with Fe-57 were studied by means of Mossbauer spectroscopy. The
hyperfine fields B(hf) Vs lattice parameter are rather similar oscilla
ting around 6 T. For (Dy(FeMn)2)-Fe-57underbar the chemically equivale
nt Mn sites in the unite cell are magnetically differentiated ensuing
two hyperfine fields B(hf)I = 8 T and B(hf)II = 3.7 T. The electronic
contribution to the electric field gradient V(zz) is negative.