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Contribution to the crystal chemistry of orthorhombic perovskites: MgSiO3 and NaMgF3

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Abstract

The structures of MgSiO3 and NaMgF3 are described in terms of the angle ø by which the SiO6 (MgF6) octahedra are rotated from the ideal cubic perovskite structure. The expected effects of temperature and pressure on ø (and hence on the atomic coordinates and volume) are discussed. It is predicted that the effect of pressure will be to decrease the coordination of Mg in MgSiO3.

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Author notes

  1. Jan-Olov Bovin

    Present address: Inorganic Chemistry 2, Chemical Centre, University of Lund, P.O. Box 740, S-22007, Lund 7, Sweden

Authors and Affiliations

  1. Department of Chemistry, Arizona State University, 85281, Tempe, Arizona, USA

    M. O'Keeffe

  2. Research School of Chemistry, The Australian National University, Box 4 P.O., 2600, Canberra A.C.T., Australia

    B. G. Hyde

  3. Department of Chemistry, Arizona State University, 85281, Tempe, Arizona, USA

    Jan-Olov Bovin

Authors
  1. M. O'Keeffe
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  2. B. G. Hyde
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  3. Jan-Olov Bovin
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O'Keeffe, M., Hyde, B.G. & Bovin, JO. Contribution to the crystal chemistry of orthorhombic perovskites: MgSiO3 and NaMgF3 . Phys Chem Minerals 4, 299–305 (1979). https://doi.org/10.1007/BF00307533

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  • DOI: https://doi.org/10.1007/BF00307533

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