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      https://www.ias.ac.in/article/fulltext/pram/063/02/0413-0417

    • Keywords

       

      Phonon dispersion curves (PDCs); cohesive energy; compressibility; neutron; diffraction.

    • Abstract

       

      An extended three-body force shell model (ETSM) has been applied to investigate the static and dynamic properties of KCNxCl1−x for the compositionx = 0.56 and 1.0 at 300 K. The phonon dispersion curves computed by us are compared with the single crystal neutron diffraction data. The unusual features of these curves are the upward curvature seen in some of the acoustic branches. This is a result ofK-dependent softening of the phonon due to translation-rotation coupling. The transverse acoustic branch is more soft near the zone centre.

    • Author Affiliations

       

      Jyotsna Galgale1 Nupinder Kaur1 Preeti Singh1 Manik Manake1 N K Gaur1 R K Singh1 2

      1. Department of Physics, Barkatullah University, Bhopal - 462 026, India
      2. M.P. Bhoj Open University, Bhopal - 462 016, India

    • Dates

       
      Published
      August 2004

  • Pramana – Journal of Physics | News

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