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師大學報. 數理與科技類
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| 篇名 | Co-Al合金的電子結構研究 |
|---|---|
| 卷期 | 46:1/2 |
| 並列篇名 | Electronic-Structure Study of a Co-Al Alloy |
| 作者 | 徐力行 、 鍾世俊 、 權奇洪 |
| 頁次 | 13-22 |
| 關鍵字 | 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 |
| 出刊日期 | 200110 |
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Ni3A1及CoGa為大。這 現象表示此Co-Al合金之費米面的能態密度較Ni3A1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.