Surface geometry of pure iridium oxidized at 1373 K in air

Z. B. Bao, H. Murakami, Y. Yamabe-Mitarai

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)

Abstract

The surface microstructure of a polished Ir sample during isothermal heat treatment at 1373 K in air was characterized. Various surface morphologies including triangular pits and terraces, "pyramid"-like plateaus and striated edges were observed. Changes in surface geometry were highly dependent on the original grain orientation. Most grains were confirmed to possess or partly exhibit a geometric configuration of {1 1 1} faceting habit, while periodic bond chain (PBC) vectors played an important role in determining the ultimate surface morphology. The mechanism and process of how these distinct surface morphologies formed are discussed.

Original languageEnglish
Pages (from-to)1514-1518
Number of pages5
JournalApplied Surface Science
Volume258
Issue number4
DOIs
Publication statusPublished - 2011 Dec 1
Externally publishedYes

Keywords

  • Faceting
  • Iridium
  • Oxidation
  • Surface structure

ASJC Scopus subject areas

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

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