Optical absorption and nuclear magnetic resonance in lithium titanium spinel doped by chromium期刊界 All Journals 搜尽天下杂志传播学术成果专业期刊搜索期刊信息化学术搜索

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Optical absorption and nuclear magnetic resonance in lithium titanium spinel doped by chromium

Authors:	D G Kellerman N A Mukhina N A Zhuravlev M S Valova and V S Gorshkov

Institution:	1.Institute of Solid State Chemistry, Ural Branch,Russian Academy of Sciences,Yekaterinburg,Russia;2.Eliont LLC,Yekaterinburg,Russia;3.Postovski? Institute of Organic Synthesis, Ural Branch,Russian Academy of Sciences,Yekaterinburg,Russia

Abstract:	The optical absorption and nuclear magnetic resonance spectra of Li_{4 − x}Cr_3xTi_{5 − 2x}O₁₂ (x = 0, 0.01, 0.02, 0.04) solid solutions have been investigated. It has been found that, in the Li₄Ti₅O₁₂ spinel, lithium ions migrate from tetrahedral to octahedral positions with increasing temperature. Doping of chromium to the spinel favors an increase in the fraction of tetrahedrally coordinated lithium and hinders diffusion.

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