“…They are also in good agreement with the anomalous behaviors observed previously below 200 K on TbIG single crystals without applied magnetic fields, in the acoustic properties (Kvashnina et al, 1984;Smokotin et al, 1985) and in the elastic constant measurements (Alberts et al, 1988) It seems that the behavior around 160 K has a relation with the previous predicted momentum angular compensation point T J (Nelson & Mayer, 1971) localized at 150 and 190 K by assuming the free and quenched ion value respectively.…”