X-ray photoelectron spectroscopy study of the electronic structure of La1–xCaxMnO3+δ solid solutions

被引：0
作者：
S. H. Estemirova
A. V. Fetisov
V. B. Fetisov
机构：
[1] Urals Branch of the Russian Academy of Sciences,Institute of Metallurgy
[2] Urals State University of Economics,undefined
来源：
Journal of Applied Spectroscopy | 2009年 / 76卷
关键词：
X-ray photoelectron spectroscopy; La; Ga; MnO; oxygen nonstoichiometry; polymorphic structure; solid solution;
D O I：
暂无
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学科分类号：
摘要：
The electronic structure of La1–xGaxMnO3+δ. solid solutions is studied by X-ray photoelectron spectroscopy (XPS). The valence state of the manganese is estimated by various methods: by analyzing the difference in the binding energies of the Mn2p3/2 and O1s electronic levels, analyzing exchange splitting in the spectrum of Mn3s, and from the dependence of the binding energy of the XPS spectrum of Mn2p3/2 on the calcium concentration. The state of oxidation of the manganese in the compositions containing calcium lies between Mn3+ and Mn4+. The efficacies of these methods are compared. A correlation is found between the type of crystalline structure of La1–xGaxMnO3+δ. (0 ≤ x < 1) and the binding energy of the Mn2p3/2 peak.
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页码：394 / 401
页数：7
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