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Energy analysis for (1 1 1) twist grain boundary in noble metals

Authors
Journal
Applied Surface Science
0169-4332
Publisher
Elsevier
Publication Date
Volume
243
Identifiers
DOI: 10.1016/j.apsusc.2004.09.100
Keywords
  • Noble Metals
  • Grain Boundary Energy
  • Maeam
  • Calculation

Abstract

Abstract With modified analytical embedded atom method (MAEAM), the energies of twist grain boundaries (GBs) have been calculated for three noble metals, Cu, Ag and Au with the same FCC structure. The results are similar for all the three metals: (1) the unrelaxed energies keep almost constant with twist angles θ; (2) after expansion perpendicular to the boundary, GB energies drop significantly to less than one-third of their surface energies respectively; (3) in-boundary translation results in periodic energy variation with the period of L Σ / Σ, but the energy variation is slight.

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