Paper Title:
Formation of Point Defects in Dilute FCC Alloys
  Abstract

Using pseudopotential approach, vacancy formation energy , different non-split interstitial formation energies and binding energy for the vacancy-impurity pair and that for interstitial impurity over host have been calculated in some cubic fcc metal systems, viz. copper, silver, gold and lead using Ashcroft's potential and Taylor's exchange and correlation function with standard (AT) and fitted to (ATF) and also Heine-Abarenkov’s model potential and same exchange and correlations (HAT). It is difficult to have a universal value for all types of atomic property calculations. The results show that ATF and HAT combinations are better in comparison to AT. Also, the substitutional impurity adjacent to a vacancy is found to be more loosely bound than the interstitial impurity in fcc metals.

  Info
Periodical
Defect and Diffusion Forum (Volumes 280-281)
Edited by
David J. Fisher
Pages
79-84
DOI
10.4028/www.scientific.net/DDF.280-281.79
Citation
A. Ghorai, "Formation of Point Defects in Dilute FCC Alloys", Defect and Diffusion Forum, Vols. 280-281, pp. 79-84, 2008
Online since
November 2008
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Price
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