The infrared, Raman and Fe-57-Mossbauer spectra of FeTbGe2O7 were recorded
and analyzed on the basis of its crystallographic data. For comparative pur
poses, similar measurements were also performed with FeYGe2O7 and with othe
r isostructural compounds containing different lanthanide cations. (C) 2000
Elsevier Science B.V. All rights reserved.