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Study of driving forces for atomic migration in metals and dilute alloys

ADITYA M. VORA1,*

Affiliation

  1. Parmeshwari 165, Vijaynagar Area, Hospital Road, Bhuj–Kutch, 370 001, Gujarat, India

Abstract

We present a pseudopotential calculation of the driving forces for atomic migration in the metals and dilute alloys in the presence of electron currents. The forces on an atom arising from the applied electric field and from the electron scattering together comprise the driving force, causes a net current of atoms. A well recognized Ashcroft’s empty core (EMC) local model potential is used to investigate the driving forces for interstitial FINT and vacancy FVAC migration in several metals and their dilute alloys. The present study concludes that FINT is larger than FVAC. For some dilute alloys the electron scattering force is found in the opposite direction to the electron drift velocity. Present findings are compared with the other such data, which confirms the applicability of the model potential..

Keywords

Model potential, Driving forces, Atomic migrations, Metals and dilute alloys.

Submitted at: July 17, 2006
Accepted at: Sept. 13, 2006

Citation

ADITYA M. VORA, Study of driving forces for atomic migration in metals and dilute alloys, Journal of Optoelectronics and Advanced Materials Vol. 8, Iss. 5, pp. 1848-1850 (2006)