Criteria for diffusion by a site-interchange mechanism

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Abstract

Criteria are established for evaluating whether self-diffusion in a material may be occurring by a site-interchange diffusion mechanism. The criteria include comparisons between defect formation and migration energies for the site-interchange model and a normal vacancy diffusion model. These criteria are applied to some material systems to illustrate their utility. A siteinterchange diffusion mechanism is probably occurring in lithium niobate, but this mechanism is not operative in silicon carbide or in some III-V compound semiconductors.

Original languageEnglish
Pages (from-to)1277-1279
Number of pages3
JournalJournal of the American Ceramic Society
Volume72
Issue number7
DOIs
Publication statusPublished - Jul 1989

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Keywords

  • Diffusion
  • Lithium niobate
  • Modeling
  • Silicon carbide
  • Stoichiometry

ASJC Scopus subject areas

  • Ceramics and Composites
  • Materials Chemistry

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