| LISICON(锗酸锌锂)单晶的Li+离子电导 |
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| 引用本文： | 陈立泉,王昌庆,王连忠,肖超亮,毕建清. LISICON(锗酸锌锂)单晶的Li+离子电导[J]. 物理学报, 1980, 29(5): 661-666 |
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| 作者姓名： | 陈立泉 王昌庆 王连忠 肖超亮 毕建清 |
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| 作者单位： | 中国科学院物理研究所 |
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| 摘 要： | 本文研究了Lisicon(锗酸锌锂)单晶的Li+离子电导率。发现各结晶学方向电导率之间的关系为σb≤σa≤σc≤σ[110],但各向异性不强。晶体中Li含量对电导率有明显的影响,当Li/Zn比率由6.7变到9.2时,300℃a方向电导率由4.3×10-2Ω-1·cm-1增加到1.25×10-1Ω-1·cm-1,logσT对1/T的曲线显示出三个转变点,分别在～80℃,～140℃和～300℃。电导的激活能分别为0.50—0.58eV(25—80℃),0.92eV(～80—140℃),0.64eV(～140—300℃)和0.36eV(>300℃),极化实验表明单晶的电子电导可以忽略。关键词：
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| 收稿时间： | 1979-07-09 |
LITHIUM IONIC CONDUCTIVITY OF LISICON SINGLE CRYSTALS |
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| CHEN LI-QUAN,WANG CHANG-QING,WANG LIAN-ZHONG,XIAO CHAO-LIANG and BI JIAN-QING. LITHIUM IONIC CONDUCTIVITY OF LISICON SINGLE CRYSTALS[J]. Acta Physica Sinica, 1980, 29(5): 661-666 |
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| Authors: | CHEN LI-QUAN WANG CHANG-QING WANG LIAN-ZHONG XIAO CHAO-LIANG BI JIAN-QING |
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| Abstract: | Lithium ionic conductivity of LISICON single crystals grown by Czochralski method has been investigated. It was found that the conductivities in different orientations do not show strong anisotropy and the relations between them are: σb≤σa≤σc≤σ[110]. The lithium content in the crystals have obvious influence on conductivity. When Li/Zn ratio changes from 6.7 to 9.2, the conductivity in a-direction at 300℃ increases from 4.3 × 10-2Ω-1·cm-1 to 1.25×10-1Ω-1·cm-1. Three transition points at ～80℃, ～140℃ and ～300℃ have been shown in logσT vs. 1/T curves. The activation energy for conduction are 0.5-0.58 eV (25-80℃), 0.92 eV (80-140℃), 0.64 eV (140-300℃) and 0.36 eV (> 300℃) respectively. The polarization experiments indicated that LISICON is a lithium ionic conductor with negligible electronic conductivity. |
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