Structure of Compounds in the Sr1–3x/2CexTiO3 Homologous SeriesChemistry of Materials
AbstractFour compositions in the Sr1–3x/2CexTiO3 homologous series, corresponding to x = 0.1333, 0.1667, 0.25, and 0.4, have been produced by conventional solid-state processing. The structure of these compounds was analyzed by X-ray, electron, and neutron diffraction. While no superlattice can be observed via X-ray diffraction, both electron and neutron diffraction show evidence of a noncubic supercell caused by antiphase tilting of oxygen octahedra. The most likely space group is R3̅c, corresponding to an a−a−a− tilt system, except for the composition x = 0.4, for which an even more complex superstructure is observed. The degree of tilt increases with increasing x.
Citation InformationRick Ubic, Ganesanpotti Subodh, Mailadil T. Sebastian, Delphine Gout, et al.. "Structure of Compounds in the Sr1–3x/2CexTiO3 Homologous Series" Chemistry of Materials (2008)
Available at: http://works.bepress.com/rick_ubic/90/