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Crystal Structure of Sr0.4Ce0.4TiO3 Ceramics
Chemistry of Materials
  • Rick Ubic, Boise State University
  • Ganesanpotti Subodh, Institute of Interdisciplinary Sciences and Technology
  • Delphine Gout, Jülich Center for Neutron Science-SNS
  • Mailadil T. Sebastian, Institute of Interdisciplinary Sciences and Technology
  • Thomas Proffen, Los Alamos Neutron Science Center
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A cerium-doped SrTiO3 compound with the composition Sr0.4Ce0.4TiO3 has been produced by conventional solid-state processing. The structure of this compound 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 C2/c, corresponding to an a-b-b- tilt system. Octahedra are tilted by ~5° about the pseudo-cubic a-axis and ~1.5° about the pseudo-cubic b- and c-axes.
Citation Information
Rick Ubic, Ganesanpotti Subodh, Delphine Gout, Mailadil T. Sebastian, et al.. "Crystal Structure of Sr0.4Ce0.4TiO3 Ceramics" Chemistry of Materials (2009)
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