Aサイト欠損型ペロブスカイトLa_<1/3-x>Li_<3x>TaO_3 のリチウムイオン伝導におけるリチウムイオン移動度と活性化エネルギー

概要

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The lithiurn ion conductivity of perovskite-type solid-solutions La_<1/3-x>Li_<3x>TaO_3 was measured by the ac impedance method and the activation energy for conduction was determined. The lithium ion mobility was calculated in order to discuss the conductivity behavior. While the ordering at the A-sites as well as the tetragonal distortion lowered the mobility for tetragonal perovskites ( x≦0.06), the mobility decreased with decreasing the lattice parameter for cubic perovskites (0.075≦x≦1/6). The logarithm of the mobility was found to decrease linearly with increasing the activation energy. It was concluded that the lithium ion mobility was the major factor in influencing lithium ion conduction in this solid-solution system.
社団法人日本セラミックス協会の論文
1998-04-01