Carbon monoxide adsorption on ultra-thin Fe film deposited on Cu(100)

T. Tanabe, Y. Suzuki, T. Wadayama, A. Hatta

研究成果: Conference article査読

21 被引用数 (Scopus)

抄録

This paper is mainly concerned with vibrational properties of CO adsorbed on fcc Fe(100) observed using IR reflection absorption spectroscopy. An epitaxial Fe film of eight monolayers has been grown at 300 K on Cu(100). At 0.1 L exposure only a single C-O stretch band appears at 1920 cm-1 which shifts to 1977 cm-1 at 0.55 L. This band further shifts to 1998 cm-1 and saturates in intensity at 0.88 L. In contrast, at 0.25 L a second C-O stretch band appears at 2020 cm-1 which increases in intensity and shifts to 2048 cm-1 at 1.2 L. The initially observed band can be ascribed to the bridging CO and the second band to the on-top CO. Although the bridging CO was stable up to ca. 380 K, the band due to the on-top CO was less stable and disappeared above 313 K. The observed CO adsorption/desorption behavior on the epitaxial fcc Fe(100) surface is compared with that on a vacuum-evaporated bcc Fe polycrystalline film.

本文言語English
ページ(範囲)414-418
ページ数5
ジャーナルSurface Science
427-428
DOI
出版ステータスPublished - 1999 6 1
外部発表はい
イベントProceedings of the 1998 9th International Conference on Vibrations at Surfaces (VAS9) - Kanagawa-ken, Jpn
継続期間: 1998 10 121998 10 16

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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