Über das System Ba2Sm0,67(1-x)La0,67xUO6

On the System Ba₂Sm_0.67(1?x)La_0.67xUO₆ In the Ba₂Sm_0.67xUO₆ system the boundary of the perovskite phase reachs up to x ? 0.33. With increasing Lanthanum content a transition from a structure with vacancies in the SE³⁺-sublattice to a lattice typ with interstitial oxygen is observed. By the interpretation of the reflectance and vibrational spectra the relations between colour and constitution are shown.