Interface stability and self-organization of precipitates under irradiation

P. Bellon, R. A. Enrique

Research output: Contribution to journalArticle

Abstract

The evolution of interfaces in alloys under irradiation is modeled using a description where two dynamics are operating in parallel. The first dynamic corresponds to the thermally activated migration of atoms, assisted by point defects. The second dynamic corresponds to the forced, ballistic, mixing produced by nuclear collisions in metallic alloys. Using atomistic kinetic Monte-Carlo simulations and analytical modeling, it is shown that interfaces under irradiation can undergo kinetic roughening or kinetic faceting and that self-organization of precipitates at a mesoscale can be obtained when the range of ballistic mixing is greater than a threshold value. Practical consequences for ion-beam synthesis of nonequilibrium nanostructures are discussed.

Original languageEnglish (US)
Pages (from-to)1-6
Number of pages6
JournalNuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms
Volume178
Issue number1-4
DOIs
StatePublished - May 2001

Keywords

  • Faceting
  • Interface
  • Irradiation
  • Nanostructures
  • Roughening
  • Self-organization

ASJC Scopus subject areas

  • Surfaces, Coatings and Films
  • Instrumentation
  • Surfaces and Interfaces

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