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在沿c轴方向(以下简称c向)加静电场的作用下,测试频率为1OkHz时,测量了α-碘酸钾的表观介电系数ε′c和ε′a随同号电压V+和异号电压V-变化的特征曲线,确定了晶体中不存在类似于半导体的肖脱基阻挡层。当静电场加在c向上后,ε′c变化的弛豫过程,与静电场作用下中子衍射强度增加的弛豫过程相似。实验观察到,这一晶体导电的载体主要是锂离子,并近似地具有在c向上一维电导性的特点。测出了c向电阻率ρc与V+和V-的特征曲线。The characteristic curves, measured with a 10 kHz signal of the apparent dielectric constants ε′c and ε′a were obtained for a bias electrostatic potential of various voltages applied on an α-LiIO3 single crystal z-cut plate, the potential being either in the homogeneous or in the heterogeneous direction relative to the crystal's electrical polarity. Results show that there do not exist Schottky barrier layers in the crystal. A relaxation phenomen on of ε′c as the result of application of the bias d-c field was observed similar to that which had been detected in the case of the enhancement of neutron diffraction. It was experimentally verified that the current carriers in this crystal are chiefly, if not entirely, lithium ions, and that the conductivity may be approximately described as one-dimensional along the c-axis. The characteristic curves of ρc against V+ (homogeneous direction) and V-(heterogeneous) were also obtained.
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