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Cation Distribution and Interatomic Interactions in Oxides with Heterovalent Isomorphism: V. Complex Aluminates LnCaAl3O7

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Abstract

A short-range ordering of lanthanide and calcium atoms was found in isomorphous La3 + and Ca2 + cations in stoichiometric oxides LnCaAl3O7 (Ln = La, Nd, Sm, Gd, Ho, Er). It takes place almost exclusively within the first cation coordination sphere. The cations form electrostatically linked mixed cation pairs Ln3 +-Ca2 + in the nearest neighboring points of a common structural site. No spatial ordering of the pairs themselves is observed.

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Authors and Affiliations

  1. St. Petersburg State University, St. Petersburg, Russia

    Yu. E. Smirnov, I. A. Zvereva & R. A. Zvinchuk

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  1. Yu. E. Smirnov
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  2. I. A. Zvereva
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  3. R. A. Zvinchuk
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Smirnov, Y.E., Zvereva, I.A. & Zvinchuk, R.A. Cation Distribution and Interatomic Interactions in Oxides with Heterovalent Isomorphism: V. Complex Aluminates LnCaAl3O7 . Russian Journal of General Chemistry 72, 1848–1852 (2002). https://doi.org/10.1023/A:1023482322133

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  • DOI: https://doi.org/10.1023/A:1023482322133

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