Premium
Phonon Frequencies in Metallic Glasses
Author(s) -
Agarwal P. C.,
Kachhava C. M.
Publication year - 1993
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.2221790211
Subject(s) - pseudopotential , phonon , radius , dispersion (optics) , function (biology) , core (optical fiber) , condensed matter physics , physics , transverse plane , interatomic potential , materials science , computational physics , optics , quantum mechanics , computer science , structural engineering , computer security , evolutionary biology , molecular dynamics , biology , engineering
The Ashcroft empty core model potential is used to derive the effective interatomic potential, V eff ( r ), and the pair correlation function, g(r), of metallic glasses through the pseudopotential approach. The only parameter r c (core radius) is chosen to make the calculated g( r ) as close as possible with available experimental data. V eff ( r ) alongwith g( r ) of the glass is used to evaluate longitudinal and transverse phonon frequencies by the use of the Takeno and Goda equations. The formulation reproduces the main characteristics of the dispersion curves obtained by computer simulation techniques.