International Journal of
Physical Sciences

  • Abbreviation: Int. J. Phys. Sci.
  • Language: English
  • ISSN: 1992-1950
  • DOI: 10.5897/IJPS
  • Start Year: 2006
  • Published Articles: 2572

Full Length Research Paper

Lattice dynamic study of potassium bromide using theoretical approach

U. C. Srivastava1*, R. S. Pandey1 and K. S. Upadayaya2
1Department of Physics, Amity Institute of Applied Sciences, Sector-125, Noida -201301, U. P., India. 2K. N. Government P. G. College, Gyanpur, Bhadohi, U. P., India.
Email: [email protected]

  •  Accepted: 25 May 2010
  •  Published: 31 July 2010

Abstract

A unified description of a series of  Phonon properties of potassium bromide by means of Van der Waals three-body force shell model [VTBFSM]. This model includes Van der Waals Interactions (VWI) and three-body interactions (TBI) in the framework of both ion polarizable rigid shell model (RSM). In fact the present model [VTBFSM] has revealed much better descriptions of IR/Raman spectra and anhormonic properties and other dynamical properties of KBr. Excellent agreement is found between calculated values and measured data for phonon dispersion curve. It is simple crystal but its various properties give better future prospective.

 

Key words: Lattice vibrational properties, Phonon dispersion curve and Raman/IR spectra.