Infrared reflection absorption spectroscopic study for CO adsorption on molecular beam epitaxially grown Fe films on Cu(1 1 1)

T. Tanabe, R. Buckmaster, T. Ishibashi, T. Wadayama, A. Hatta

研究成果: Article査読

18 被引用数 (Scopus)

抄録

Adsorption of CO at 90 K on molecular beam epitaxially grown Fe films on Cu(1 1 1) has been investigated using IR reflection absorption spectroscopy (IRRAS). Reflection high energy electron diffraction images reveal Fe films up to 4 ML (monolayer) thickness have an fcc(1 1 1) structure and a mixture of fcc(1 1 1) and bcc(1 1 0) structures for 4-8 ML thick films. A bcc(1 1 0) structure dominates the films beyond 8 ML in thickness. The C-O stretching frequency at saturation coverages observed by IRRAS represents these structural differences clearly. For 1-4 ML thick fee Fe films C-O stretch is located at 2000 cm-1 and the 6-8 ML thick films yield two C-O stretch bands at 2000 and 2032 cm-1, the latter of which is dominant for films more than 10 ML thick.

本文言語English
ページ(範囲)1-8
ページ数8
ジャーナルSurface Science
472
1-2
DOI
出版ステータスPublished - 2001 1月 20
外部発表はい

ASJC Scopus subject areas

  • 凝縮系物理学
  • 表面および界面
  • 表面、皮膜および薄膜
  • 材料化学

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