Lithium Ion Conductivity in a Perovskite Lanthanum Lithium Titanate Single Crystal
Lithium Ion Conductivity in a Perovskite Lanthanum Lithium Titanate Single Crystal
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钙钛矿钛酸锂镧单晶中的锂离子电导率
DOI：
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发表时间：
1997
期刊：
影响因子：
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通讯作者：
M. Itoh
中科院分区：
文献类型：
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作者：
Y. Inaguma;Jianding Yu;T. Katsumata;M. Itoh
采用浮区法生长钙钛矿La0.59±0.01Li0.27±0.01TiO3.02±0.02单晶，并测定其锂离子电导率。发现电导率主要是离子。在平行和垂直于c轴的300K处离子电导率分别为5.8×10-4和6.8×10-4S·cm-1。离子电导率的各向异性对应于结构的各向异性，即离子分布的各向异性。此外，多晶样品的离子电导率和离子电导率活化能与颗粒的离子电导率几乎相同，表明对多晶样品离子电导率的评价是合适的。
A perovskite La0.59±0.01Li0.27±0.01TiO3.02±0.02 single crystal was grown by the floating zone method and its lithium ion conductivity was measured. The conductivity was found to be predominantly ionic. The ionic conductivities at 300K parallel and perpendicular to the c-axis are 5.8×10-4 and 6.8×10-4S·cm-1, respectively. The anisotropy of the ionic conductivity corresponds to that of the structure, i.e., of the distribution of La ions. Furthermore, the ionic conductivity and activation energy for ion conduction are almost the same as those of a grain in polycrystalline samples, indicating that the evaluation of the ionic conductivity of polycrystalline samples was appropriate.