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首页> 外文期刊>Philosophical Magazine Letters >Site preference of Ru in NiAl and valence band structure of NiAl containing Ru: First-principles study and photoelectron spectrum
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Site preference of Ru in NiAl and valence band structure of NiAl containing Ru: First-principles study and photoelectron spectrum

机译:Ru在NiAl中的位置偏爱和含Ru的NiAl的价带结构:第一性原理研究和光电子能谱

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摘要

The site preference of Ru in NiAl was studied using first-principles calculations. The calculation of formation energies indicated that the site preference of Ru was on the Ni sites. The valence band (VB) structures of the NiAl alloys were investigated by photoelectron spectroscopy. The VB spectra of the NiAl-Ru alloy was shifted away from the Fermi level so that the Ni d-band centroid moved to a higher energy by 7.77 eV as Ru was added. Such a shift revealed that the Ni-Ru interactions gave a significant contribution to the VB structure of the NiAl-Ru alloy.
机译:使用第一性原理研究了Ru在NiAl中的位点偏好。形成能的计算表明,Ru的位点偏爱在Ni位点上。用光电子能谱研究了NiAl合金的价带(VB)结构。 NiAl-Ru合金的VB光谱从费米能级移开,因此当添加Ru时,Ni d-带质心向更高的能量移动了7.77 eV。这种变化表明,Ni-Ru相互作用对NiAl-Ru合金的VB结构起了重要作用。

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