Investigation of multiplet splitting of Fe 2p XPS spectra and bonding in iron compounds
Investigation of multiplet splitting of Fe 2p XPS spectra and bonding in iron compounds
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DOI：
10.1002/sia.1984
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发表时间：
2004-12-01
影响因子：
1.7
通讯作者：
McIntyre, NS
中科院分区：
文献类型：
--
作者：
Grosvenor, AP;Kobe, BA;McIntyre, NS
通过XPS研究了亚铁（Fe 2+）和三价铁（Fe 3+）化合物，以确定计算的多重峰对拟合高自旋化合物的高分辨率铁2 p（3/2）光谱的有用性。多重峰被发现适合大多数光谱，特别是当贡献归因于表面峰和震动卫星。这一信息是有用的配合物Fe 2 p（3/2）光谱的拟合Fe 3 O 4的Fe 2+和Fe 3+物种都存在。发现随着铁-配体键的离子键特征的增加，与亚铁或三价铁2 p（3/2）光电子峰相关的结合能也增加。这被确定为是由于铁阳离子的屏蔽减少，越来越多的电负性配体。还观察到高自旋铁2 p（3/2）峰与其相应的振荡卫星峰之间的能量差随着配体的电负性增加而增加。离子氧化物的非本征损失谱也有报道，这些都是每个物种的特征是光电子峰。版权所有（C）2004约翰威利父子有限公司。
Ferrous (Fe2+) and ferric (Fe3+) compounds were investigated by XPS to determine the usefulness of calculated multiplet peaks to fit high-resolution iron 2p(3/2) spectra from high-spin compounds. The multiplets were found to fit most spectra well, particularly when contributions attributed to surface peaks and shake-up satellites were included. This information was useful for fitting of the complex Fe 2p(3/2) spectra for Fe3O4 where both Fe2+ and Fe3+ species are present. It was found that as the ionic bond character of the iron - ligand bond increased, the binding energy associated with either the ferrous or ferric 2p(3/2) photoelectron peak also increased. This was determined to be due to the decrease in shielding of the iron cation by the more increasingly electronegative ligands. It was also observed that the difference in energy between a high-spin iron 2p(3/2) peak and its corresponding shake-up satellite peak increased as the electronegativity of the ligand increased. The extrinsic loss spectra for ion oxides are also reported; these are as characteristic of each species as are the photoelectron peaks. Copyright (C) 2004 John Wiley Sons, Ltd.