ELASTIC BEHAVIOUR AND LATTICE VIBRATIONS IN bcc V AND Nb
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چکیده
A model is devełoped by extending the generalised form of exponential potential known as extended generalised exponential potential to account for: (a) a realistic realization of interactions in alł separations in general and that of small separations in particular, (b) three-body and electronic effects into the interaction in an alternative and simpler form, (c) a model free from usual fitting procedure. The model is employed to compute the cohesive energy, phonon spectra and secondand third-order elastic constants for group VA bcc metals V and Nb. The computed results showing good agreement with the experimental findings lend reliability and credibility to the potential. PACS numbers: 63.20.Dj, 62.20.Dc
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تاریخ انتشار 2013