Mechanism of electric charge emission from LiNbO3 single crystal

被引：5
|
作者：
Fukao, S [1 ]
Ito, Y
Yoshikado, S
机构：
[1] Doshisha Univ, Dept Elect, Kyotanabe 6100321, Japan
[2] Kyoto Univ, Chem Res Inst, Kyoto 6110011, Japan
来源：
ELECTROCERAMICS IN JAPAN VI | 2003年 / 248卷
关键词：
LiNbO3; electric charge emission; pyroelectricy; ionization energy; electron affinity; amount of electric charge;
D O I：
10.4028/www.scientific.net/KEM.248.23
中图分类号：
TQ174 [陶瓷工业]; TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
Mechanisms of electric charge emission from the surface of a single crystal of LiNbO3 by temperature change are investigated. The electric charge emission current detected consists of both dc (direct-current) current and pulsed current. The emission rate is found to be dependent on pressure, atmospheric gas species, and sample stage metal and became maximum at a gas pressure of approximately 5 Pa. The direction of current was dependent on the electric surface of the crystal from which the electric charges are emitted. The integrated value of de current is found to be proportional to the Boltzmann factor related to the first ionization energy of each atmospheric gas for the stainless steel sample holder.
引用
收藏
页码：23 / 26
页数：4
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