• Equation of state and temperature variation of the bulk modulus of the alkaline earth fluorides

    • Fulltext

       

        Click here to view fulltext PDF


      Permanent link:
      https://www.ias.ac.in/article/fulltext/pram/006/02/0087-0093

    • Keywords

       

      Equation of state; temperature variation of bulk modulus; alkaline earth fluorides; mechanical pressure; vibrational pressure; compression ratio

    • Abstract

       

      The isotherms for the alkaline earth fluorides (CaF2, SrF2 and BaF2) have been computed using the expression for the total free energy of a crystal in the quasiharmonic approximation. The theoretical points for SrF2 and BaF2 have been compared with the points derived from Bridgman’s experimental relation.

      The temperature variation of the isothermal bulk modulus of the alkaline earth fluorides has been worked out on the basis of Axe’s shell model. The theoretica points are compared with the points obtained from the temperature variation of the elastic constants data. It is found that the vibrational contribution to the temperature variation of the elastic constants in these crystals is significant.

    • Author Affiliations

       

      R Srinivasan1 V Ramachandran1

      1. Department of Physics, Indian Institute of Technology, Madras - 600036
    • Dates

       
  • Pramana – Journal of Physics | News

    • Editorial Note on Continuous Article Publication

      Posted on July 25, 2019

      Click here for Editorial Note on CAP Mode

© 2017-2019 Indian Academy of Sciences, Bengaluru.