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題名 | Electronic-Structure Study of a Co-Al Alloy=Co-Al合金的電子結構研究 |
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作者 | 徐力行; 鍾世俊; 權奇洪; Hsu, Li-shing; Chung, S. C.; Gweon, G. H.; |
期刊 | 師大學報. 數理與科技類 |
出版日期 | 20011000 |
卷期 | 46:1/2 民90.10 |
頁次 | 頁13-22 |
分類號 | 337 |
語文 | eng |
關鍵詞 | X光光電子能譜; X光吸收能譜; 過渡金屬合金; Transition metals and alloys; X-ray absorption spectra; Photoemission spectra; |
中文摘要 | 本文以高解析度X光光電子能譜、反光電子能譜、共振光電子能譜及X光吸收能譜來研究Co-Al合金的電子結構。此Co-Al合金之Co 2p內層能階的不對稱係數比Ni3Al及CoGa為大。這現象表示此Co-Al合金之費米面的能態密度較Ni3Al為大。由X光吸收能譜可知在此Co-Al合金中Co原子的3d電洞數為0.7。 |
英文摘要 | The electronic structure of a Co-Al alloy was studied by high-resolution x-ray photoemission spectroscopy, Bremsstrahlung isochromat spectroscopy, resonant photoemission spectroscopy, and x-ray-absorption spectroscopy (XAS) at the L2,3 edges of Co. The asymmetry index of the Co 2p core levels for this Co-Al alloy is larger than that for Ni3Al and for CoGa. This observation implies that the density of states at the Fermi level for this Co-Al alloy should be larger than that for Ni3Al. The number of 3d holes per Co atom is 0.7 as determined from the XAS spectrum. |
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