Analysis of the nature of electrical conductivity in nominally undoped LiNbO3 crystals

被引：0
|
作者：
A. S. Pritulenko
A. V. Yatsenko
S. V. Yevdokimov
机构：
[1] Vernadsky Taurida National University,
来源：
Crystallography Reports | 2015年 / 60卷
关键词：
Electrical Conductivity; Crystallography Report; Lithium Niobate; Lithium Niobate Crystal; Lithium Niobate;
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学科分类号：
摘要：
The temperature dependence of electrical conductivity and admittance of two nominally undoped lithium niobate crystals of congruent composition has been investigated in the temperature range of 293–450 K and simulated in the range of 350–700 K. It is shown that the ion conductivity at T < 450 K is mainly determined by OH− groups; however, some other mechanisms may manifest themselves at higher temperatures; a likely one is diffusion of oxygen vacancies, which leads to an increase in the “averaged” conductivity activation energy.
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页码：267 / 272
页数：5
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