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      https://www.ias.ac.in/article/fulltext/pram/080/02/0307-0313

    • Keywords

       

      Compressibility; point defects; mixed crystals.

    • Abstract

       

      Ab initio detailed calculations of the elastic properties of AgCl$_{x} Br$_{1−x}$ alloys were recently made using density-functional perturbation theory and by employing the virtual crystal approximation or by means of the full potential linearized augmented plane wave method. Here, we suggest a simple theoretical model that enables estimation of isothermal compressibility of these alloys in terms of the elastic data of end-members alone. The calculated values are in satisfactory agreement with the experimental ones. The present model makes use of an early suggestion that interconnects Gibbs energy for the formation and/or migration of defects in solids with bulk properties.

    • Author Affiliations

       

      Vassiliki Katsika-Tsigourakou1 Efthimios S Skordas1

      1. Department of Solid State Physics, Faculty of Physics, University of Athens, Panepistimiopolis, 157 84 Zografos, Greece
    • Dates

       
  • Pramana – Journal of Physics | News

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