Bindi, LPetricek, VWithers, RaymondZoppi, MBonazzi, P2015-12-100022-4596http://hdl.handle.net/1885/53085Additional X-ray diffraction effects yielding an eightfold commensurate superstructure [a=20.974(5)Å] of the ideal pyrochlore structure were observed after annealing at 873 K of a thallium-doped bariopyrochlore single crystal. Electron diffraction indicaKeywords: Annealing; Density (specific gravity); Single crystals; Thallium compounds; X ray diffraction; Multiphase structure refinement; Pyrochlore; Superstructure; TEM study; X-ray data; Crystal structure Multiphase structure refinement; Pyrochlore; Superstructure; TEM study; X-ray data200610.1016/j.jssc.2005.11.0312015-12-09