Structure studies of CeAlO3

M. Tanaka, T. Shishido, H. Horiuchi, N. Toyota, D. Shindo, T. Fukuda

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34 Citations (Scopus)

Abstract

The crystal structure of CeAlO3 was studied by single-crystal X-ray diffraction. The symmetry is tetragonal, a/c = 0.9922, with a small deformation from the ideal cubic lattice. The structure basically belongs to the socalled ideal perovskite type. The electron distribution of the bridging oxygen atoms of -Al-O-Al- of AlO6 octahedra running along the a axes is considerably distorted from a spherical form. The Ce and other oxygen atoms are also slightly distorted. The aluminium atom shows no distortion. These phenomena can be successfully explained using an average structure of two statistical atom arrangements. Each arrangement is characterized by small deviations of oxygen and Ce atoms from their ideal positions of the basic perovskite-type structure and resembles an orthorhombic perovskite-type structure.

Original languageEnglish
Pages (from-to)87-89
Number of pages3
JournalJournal of Alloys and Compounds
Volume192
Issue number1-2
DOIs
Publication statusPublished - 1993 Feb 23

ASJC Scopus subject areas

  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry

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    Tanaka, M., Shishido, T., Horiuchi, H., Toyota, N., Shindo, D., & Fukuda, T. (1993). Structure studies of CeAlO3. Journal of Alloys and Compounds, 192(1-2), 87-89. https://doi.org/10.1016/0925-8388(93)90194-R