2013年4月1日 · Lau et al. [175] measured the Fe 2p XAS spectra of small iron clusters on Ni/Cu(0 0 1) surfaces. The 2p XAS spectrum of the Fe 7 cluster looks similar to the spectrum of bulk iron metal, indicating that small metal clusters already lose their atomic behavior. From the XMCD spectra, analyzed with sum rules, the cluster size dependence of the ...

代表分峰拟合的时候，将Fe 2p的强谱峰分成了浅红色的Fe (Ⅱ)峰和浅绿色的Satellite峰。 Satellite的英文意思是卫星，即浅绿色的峰代表的是 卫星峰，也就是小的伴峰的意思。 （常规X射线源 (Al/MgKα1,2)并非是单色的，而是还存在一些能量略高的小伴线（Kα3,4,5和Kβ等），所以导致XPS中，除Kα1,2所激发的主谱外，还有一些小的伴峰。 比较有意思的是，卫星峰这个名称的由来，比如人造的一些卫星，这些卫星总是会围绕着地球旋转，按一定的轨道运动，有着伴随的 …

2015年1月8日 · The Fe 2p XAS intensity is proportional to the unoccupied 3d states, and therefore this trend indicates increased charge-transfer for increasing x as the occupied Fe 3d electron density is reduced around the absorbing Fe atoms for higher carbon concentration.

Some of the important theoretical concepts in the analysis of L edges are discussed, including atomic multiplet theory, crystal field theory, charge transfer theory and XMCD. The 2p XAS spectra contain much detail for halides, oxides and coordination compounds.

In extreme surface sensitivity detection TEY mode, almost entirely reduced Fe II species are detected (708 eV) in the uncoated NPs, whereas the presence of both Fe II and Fe III (710 eV)...

2013年4月1日 · 讨论了用 2p xas、xmcd 和 2p eels 获得的实验光谱，包括孤立的铁原子、固体和配位化合物。 大部分出版物涉及详细讨论的氧化铁系统，包括二元氧化物、钙钛矿和尖晶石系统。

2021年5月1日 · The 2p XAS spectra are obtained in accordance with the Fermi’s golden rule, where the transition matrix elements are computed using the wavefunctions for the initial and final states. Alternatively, transition metal 2p XAS spectra are evaluated solely from the initial state as the imaginary part of the Green’s function formalism.

Fe 2p shifts to a higher-energy side by about 0.1–0.2eV. These results indicate that the Mn3þ electron is substituted into the Fe2þ site, which contributes to improvements in the electrical properties of BF. Figure 3 shows the O 1s XAS spectra of BF and BF(Mn), where the abscissa is the relative energy to the Fermi level (E F). The ...

2024年6月27日 · Here, we investigate a series of iron-centered N-heterocyclic carbene complexes with +2, + 3, and +4 oxidation states of the central iron ion using iron L-edge and nitrogen K-edge X-ray absorption spectroscopy (XAS). The experimental Fe L-edge XAS data were simulated and interpreted through restricted-active space (RAS) and multiplet calculations.

2021年6月11日 · Here, we report the development of a database of computed L-edge XANES using the multiple scattering theory-based FEFF9 code. The initial release of the database contains more than 140,000 L-edge...