• Lattice mechanical properties of some fcc f-shell metals

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      https://www.ias.ac.in/article/fulltext/pram/060/06/1235-1246

    • Keywords

       

      Pseudopotential; binding energy; equation of states; phonon dispersion curves; elastic constants

    • Abstract

       

      A pseudopotential depending on an effective core radius is proposed to study the binding energy, equation of state, ion-ion interaction, phonon dispersion curves (q-space and r-space analysis), mode Grüneisen parameters and dynamical elastic constants of some fcc f-shell metals La, Yb, Ce and Th. The contribution of the s-like electrons is calculated in the second-order perturbation theory for the potential while d and f-like electron is taken into account by introducing repulsive short-range Born-Mayer term. The parameter of the potential is evaluated by zero pressure condition. An excellent agreement between theoretical investigations and experimental findings is achieved which confirms the present formalism

    • Author Affiliations

       

      J K Baria1 A R Jani1

      1. Department of Physics, Sardar Patel University, Vallabh Vidyanagar - 388 120, India
    • Dates

       
  • Pramana – Journal of Physics | News

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