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Estimation of thermal expansion coefficient of solid crystalline dielectrics at high temperatures

Journal of Contemporary Physics (Armenian Academy of Sciences) volume 50, pages 79–83 (2015)Cite this article

An Erratum to this article was published on 01 April 2015

Abstract

With the view of goal-directed search for materials with required value of thermal expansion coefficient a generalized expression for approximate estimation of the coefficient of thermal linear expansion of solid crystalline dielectrics at temperatures above the Debye temperature is obtained. It is shown based on the example of rare-earth magnesium hexaaluminates that the calculations by these expressions well agree with experimental quantities. For these compounds an expression for evaluation in the first approximation of the value of internal energy of crystal lattice was also obtained.

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Authors and Affiliations

  1. Institute for Physical Research, NAS of Armenia, Ashtarak, Armenia

    A. V. Yeganyan & A. S. Kuzanyan

  2. General Department of Applied Sciences, Technological Educational Institute of Sterea Ellada, Chalkida, Greece

    V. S. Stathopoulos

Authors
  1. A. V. Yeganyan
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  2. A. S. Kuzanyan
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  3. V. S. Stathopoulos
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Corresponding author

Correspondence to A. S. Kuzanyan.

Additional information

Original Russian Text © A.V. Yeganyan, A.S. Kuzanyan, V.S. Statopoulos, 2015, published in Izvestiya NAN Armenii, Fizika, 2015, Vol. 50, No. 1, pp. 105–110.

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Yeganyan, A.V., Kuzanyan, A.S. & Stathopoulos, V.S. Estimation of thermal expansion coefficient of solid crystalline dielectrics at high temperatures. J. Contemp. Phys. 50, 79–83 (2015). https://doi.org/10.3103/S1068337215010120

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  • DOI: https://doi.org/10.3103/S1068337215010120

Keywords

  • rare-earth hexaaluminates
  • thermal expansion coefficient