In-situ IR and RHEED observations of fcc-Fe epitaxial growth on Cu(100) in an atmosphere of carbon monoxide

Toshimasa Wadayama, Terumasa Yamashita, Ryoji Tanimura, Takanori Sato, Kiyoshi Monma, Aritada Hatta

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

Infrared reflection absorption spectroscopy (IRRAS) and reflection high-energy electron diffraction (RHEED) have been applied to in-situ observations of fcc-Fe epitaxial growth on Cu(100) at room temperature under very low carbon monoxide (CO) pressures. Extended layer-by-layer growth of fcc-Fe is observed at a CO pressure of 2.7 × 10-8 Pa. Nevertheless, no adsorbed CO was detected on the growing film surface. The layer-by-layer growth is hampered severely at a CO pressure higher than 1.3 × 10-7 Pa. A small band that is attributable to CO adsorption appears in the IRRAS spectra taken in the early stages of deposition at 1.3 × 10-6Pa. These observations indicate that the dissociation of adsorbed CO on the growing film surface plays an important role in the promotion of the layer-by-layer film growth of fcc-Fe.

Original languageEnglish
Pages (from-to)2478-2481
Number of pages4
JournalMaterials Transactions
Volume45
Issue number7
DOIs
Publication statusPublished - 2004 Jul

Keywords

  • Carbon monoxide
  • Cu(100)
  • Face centered cubic-Fe
  • Infrared reflection absorption spectroscopy
  • Molecular beam epitaxy
  • Reflection high-energy electron diffraction
  • Surfactant

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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