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Correlation between the lattice parameters of crystals with perovskite structure

  • Theory of Crystal Structures
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Abstract

The correlation \((\bar a_2 + \bar a_3 ) = (\bar a_1 + \bar a_4 )\) has been established for the mean parameters of the reduced perovskite unit cells, \(\bar a_1 ,\bar a_2 ,\bar a_3 \) and \(\bar a_4 \) of four arbitrary compounds with the perovskite structure having the compositions (1) ABX 3, (2) A′BX 3, (3) AB′X 3, and (4) A′B′X 3, where A, A′ and B, B′ are the pairs of metal atoms with equal valences and X is an oxygen or halogen atom. The above correlation is consistent with the model of harmonic quasi-elastic atomic interactions.

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Authors and Affiliations

  1. Institute of Physics, Rostov State University, pr. Stachki 194, Rostov-on-Don, 344090, Russia

    G. A. Geguzina & V. P. Sakhnenko

Authors
  1. G. A. Geguzina
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  2. V. P. Sakhnenko
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Dedicated to the 80th Birthday of L.A. Shuvalov

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Translated from Kristallografiya, Vol. 49, No. 1, 2004, pp. 20–24.

Original Russian Text Copyright © 2004 by Geguzina, Sakhnenko.

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Geguzina, G.A., Sakhnenko, V.P. Correlation between the lattice parameters of crystals with perovskite structure. Crystallogr. Rep. 49, 15–19 (2004). https://doi.org/10.1134/1.1643959

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  • DOI: https://doi.org/10.1134/1.1643959

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