The Te-125 Mossbauer effect in the transition metal ditellurides NiTe2
, FeTe2, and MnTe2 was studied at atmospheric pressure between 78 and
297 K and a pressure of 7 GPa (78 or 297 K). The determined Debye temp
eratures are related to the crystal structure and electronic state of
Te. The pressure-induced changes in the hyperfine interaction paramete
rs are discussed in terms of charge transfer and structure type.