IR-Spektren einiger Doppeloxide des Typs Te3MIVO8

I.R. Spectra of Some Double Oxides of the Type Te₃M^IVO₈ The infrared spectra of the phases Te₃M^IVO₈ (M^IV = Ti, Zr, Hf, Sn), structurally related to fluorite, have been recorded and discussed. It is shown that all the observed have a complex origin, and it is not possible to assign them to definite vibrations of the metal-oxygen polyhedra present in the lattices.