X-ray photoelectron spectroscopy study of the electronic structure of La1-x Ca x MnO3+δ solid solutions

被引：12

作者：

Estemirova, S. H. ^{[1
]}

Fetisov, A. V. ^{[1
]}

Fetisov, V. B. ^{[2
]}

机构：

[1] Russian Acad Sci, Inst Met, Urals Branch, Ekaterinburg 620016, Russia

[2] Urals State Univ Econ, Ekaterinburg, Russia

来源：

JOURNAL OF APPLIED SPECTROSCOPY | 2009年 / 76卷 / 03期

基金：

俄罗斯基础研究基金会;

关键词：

X-ray photoelectron spectroscopy; La1-xGaxMnO3+delta; oxygen nonstoichiometry; polymorphic structure; solid solution; PHOTOEMISSION SPECTRA; SINGLE-CRYSTALS; TEMPERATURE; SURFACE; XPS; MN;

D O I：

10.1007/s10812-009-9180-4

中图分类号：

O433 [光谱学];

学科分类号：

0703 ; 070302 ;

摘要：

The electronic structure of La1-x Ga (x) MnO3+delta. 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 Mn2p(3/2) 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 Mn2p(3/2) 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-x Ga (x) MnO3+delta. (0 a parts per thousand currency sign x < 1) and the binding energy of the Mn2p(3/2) peak.

引用

页码：394 / 401

页数：8

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