New model for low-temperature oxidation of copper single crystal

Kensuke Fujita, Daisuke Ando, Masahito Uchikoshi, Kouji Mimura, Minoru Isshiki

Research output: Contribution to journalArticle

32 Citations (Scopus)

Abstract

Low-temperature oxidation of a copper single crystal, Cu(1 1 1), was investigated using an in situ spectroscopic ellipsometer. The oxidation rate followed the cubic rate law at 5-25 nm oxide thickness; thus, the rate law of Cu single crystal oxidation depended on Cu oxide thickness. Furthermore, the activation energy was found to be close to that of grain boundary diffusion of metal ions in the oxide layer. These results could be explained by grain boundary diffusion and oxide grain growth. Thus, we verified that the low-temperature oxidation kinetics of copper depend on oxide grain growth.

Original languageEnglish
Pages (from-to)347-358
Number of pages12
JournalApplied Surface Science
Volume276
DOIs
Publication statusPublished - 2013 Jul 1

Keywords

  • Copper
  • Ellipsometry
  • Grain growth
  • Low-temperature oxidation

ASJC Scopus subject areas

  • Chemistry(all)
  • Condensed Matter Physics
  • Physics and Astronomy(all)
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films

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