• Landau mean-field model with the cubic term for the $\alpha–\beta$ transition in quartz

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      https://www.ias.ac.in/article/fulltext/boms/043/0156

    • Keywords

       

      Landau model; $\alpha–\beta$ transition; quartz.

    • Abstract

       

      Thermodynamic quantities are calculated as a function of temperature by using Landau mean-field model for the $\alpha–\beta$ transition in quartz. By expanding the Gibbs free energy in terms of the order parameter ($Q$) with the cubic term ($Q_3$), the temperature dependence of the relevant thermodynamic quantities are predicted using the heat capacity ($C_{\rm P}$), which is fitted to the experimental data from the literature for the $\alpha–\beta$ transition in quartz. Our results indicate that the Landau mean-field model is adequate to describe the first-order $\alpha–\beta$ transition in quartz.

    • Author Affiliations

       

      S ATES1 2 H YURTSEVEN1

      1. Department of Physics, Middle East Technical University, 06531 Ankara, Turkey
      2. Vocational School of Health, Ba¸skent University, 06790 Ankara, Turkey
    • Dates

       
  • Bulletin of Materials Science | News

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