Lattice Dynamics of Silver

Authors

  • Sunil Kumar Mishra Associate Professor, Department of Physics, L.S. College, B.R.A. Bihar University, Muzaffarpur- 842001, Bihar, India

DOI:

https://doi.org/10.48165/

Keywords:

Screened Coulomb potential, phonon dispersion curve, specific heat, Debye characteristics temperature, phenomenological model, silver nanoparticles

Abstract

 A phenomenological model for the lattice dynamics of silver metal is developed. The  total interaction inside the metal is composed of mainly the interactions between the  ions and the interaction between the ions and electrons. A many parameter potential  corresponding to two-body and three-body interactions is introduced to describe the  forces between ions. The contribution to the potential energy from ion-electron  interaction is considered by a screened Coulomb potential. The theoretical model  developed is employed to obtain the phonon dispersion curves of silver. Computed  phonon frequencies are used to explain the Debye characteristic temperatures at  different temperatures. The computed results for phonon dispersion curves and  Debye characteristic temperatures compare satisfactorily with the experimental  results.

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Published

2020-05-12

Issue

Vol. 39 No. 1 (2020): Bulletin of Pure and Applied Sciences Physics (Jan-Jul) 2020

Section

Articles

How to Cite

Lattice Dynamics of Silver . (2020). Bulletin of Pure and Applied Sciences – Physics, 39(1), 6–12. https://doi.org/10.48165/