Structural disordering in Cr-doped Li4Ti5O12 spinels |
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| Authors: | N. A. Zhuravlev N. A. Mukhina D. G. Kellerman V. S. Gorshkov |
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| Affiliation: | (1) Engineering Research Center of Nano-Geomaterials of Ministry of Education, China University of Geosciences, 430074 Wuhan, People’s Republic of China;(2) Faculty of Materials Science and Chemical Engineering, China University of Geosciences, 430074 Wuhan, People’s Republic of China |
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| Abstract: | The processes of lithium redistribution in the structure of cubic Li4Ti5O12 spinel, caused by both chromium doping and thermal activation, have been investigated by nuclear magnetic resonance. It is shown that Li ions migrate from tetra- to octahedral crystallographic positions with an increase in temperature. This process becomes more pronounced at temperatures above 400 K. In contrast, the fraction of tetrahedrally coordinated Li increases as a result of doping with chromium. |
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