Valence analysis of transition metal ions in spinel LiMnMO(4) (M=Ti,Cr,Mn,Co) by electron energy loss spectroscopy

被引：41

作者：

Suzuki, S ^{[1
]}

Tomita, M ^{[1
]}

Okada, S ^{[1
]}

Arai, H ^{[1
]}

机构：

[1] NIPPON TELEGRAPH & TEL PUBL CORP, INTERDISCIPLINARY RES LABS, TOKAI, IBARAKI 31911, JAPAN

来源：

JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS | 1996年 / 57卷 / 12期

关键词：

oxides; electron energy loss spectroscopy; electronic structure;

D O I：

10.1016/S0022-3697(96)00071-6

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Electron energy loss spectroscopy combined with a transmission electron microscope was applied to valence analysis of transition metal ions in LiMn2O4, LiMnTiO4, LiMnCrO4 and LiMnCoO4 powder samples. The transition metal 2p multiplet structures were compared with those of appropriate reference samples. The Mn, Ti and Co valences were clearly determined from the 2p spectra as LiMn3+Mn4+O4, LiMn3+Ti4+O4 and LiMn4+Co3+O4, respectively. The O 1s spectra were also effective for analysis of Cr in LiMnCrO4 and showed that the Cr ion was trivalent. The electron configuration of one of nominally tetravalent chromium compounds, CrO2 is also discussed.

引用

页码：1851 / 1856

页数：6

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