On cationic mobility in Nasicon phosphates LiTi₂(PO₄)₃ and Li_0.9Ti_1.9Nb_0.1(PO₄)₃

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• 作者：I.Yu. Pinus ; ^{ilya_pinus@mail.ru} ; A.V. Khoroshilov ; K.S. Gavrichev ; V.P. Tarasov ; A.B. Yaroslavtsev
• 关键词：Nasicon ; Lithium mobility ; DSC ; 7Li NMR ; Phase transition
• 刊名：Solid State Ionics
• 出版年：2012
• 期刊代码：96_01672738
• 类别：ch
• 出版时间：29 March, 2012
• 卷：212
• 期：Complete
• 页码：112-116
• 文件大小：466 K

摘要

A systematic examination of LiTi₂(PO₄)₃ and Li_0.9Ti_1.9Nb_0.1(PO₄)₃ phosphates with Nasicon structure was carried out in order to investigate 鈥渙rder-disorder鈥?phase transitions. The structural features of aliovalent doped Li_0.9Ti_1.9Nb_0.1(PO₄)₃ are considered in comparison with initial LiTi₂(PO₄)₃. Explanations of the thermal behavior of samples are proposed based on NMR ⁷Li, ⁹³Nb data, X-ray powder diffraction, DSC and impedance spectroscopy.