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Structure of Compounds in the Sr1–3x/2CexTiO3 Homologous Series
Chemistry of Materials (2008)
  • Rick Ubic, Boise State University
  • Ganesanpotti Subodh
  • Mailadil T. Sebastian
  • Delphine Gout
  • Thomas Proffen
Abstract

Four 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 Rc, corresponding to an aaa− 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.

Publication Date
May 13, 2008
Citation Information
Rick Ubic, Ganesanpotti Subodh, Mailadil T. Sebastian, Delphine Gout, et al.. "Structure of Compounds in the Sr1–3x/2CexTiO3 Homologous Series" Chemistry of Materials Vol. 20 Iss. 9 (2008)
Available at: http://works.bepress.com/rick_ubic/52/