抄録
The surface of a single grain icosahedral (i) Al-Cu-Fe quasicrystalline sample is studied as a function of annealing temperature using ultra-violet photoemission spectroscopy (UPS). Reflection high-energy electron diffraction and X-ray photoelectron spectroscopy are also performed to verify surface structure and composition. The sputtered surface shows structure and chemical composition consistent with that of β-Al-Cu-Fe cubic phase together with a sharp Fermi cut-off. With increasing annealing temperature, the surface structure and composition reverts to that of the quasicrystal. This transformation is correlated with a decrease of the spectral intensity at the Fermi level (EF). Analysis of the UPS spectra in the region near EF is performed by fitting the data with a pseudogap function.
本文言語 | English |
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ページ(範囲) | 54-62 |
ページ数 | 9 |
ジャーナル | Surface Science |
巻 | 539 |
号 | 1-3 |
DOI | |
出版ステータス | Published - 2003 8月 1 |
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