α—LiIO3准一维离子电导空间电荷沉积线的直观显示

为了研究α-LiIO₃在直流电场作用下,离子输运与其光学、电学性质的关系,我们设计并完成了电荷沉积线的静电染色显示和针状电极作用下电荷沉积线的生长与分布情况的光学观测实验。直接显示出间隙Li⁺和Li空位都存在各自的沉积线,证实了我们以前报道的光栅亮线是带电荷的实体;整个生长层为富集Li⁺区;直观地证实了α-LiIO₃离子管道输运与电荷沉积是完全一致的和α-LiIO₃的准一维电导特性。关键词：

DIRECT DISPLAY OF THE ACCUMULATION OF SPACE CHARGES IN ONE-DIMENSIONAL IONIC CONDUCTOR α-LiIO3

The optical and electric properties of α-LiIO₃ and its quasi one-dimensional ionic transportation are closely correlated. A great deal of information of the ionic transportation can be obtained by studying the optical and electric phenomena. Here two experiments have been designed and carried out. We have proved that the accumulational lines of space charges are produced by the interstitial Lithium ions and cation vacancies also the bright lines of grating which we recently reported are charge carriers. The whole growth layer are rich of positive charges. It can be sure that the ionic tube transportation is identi cal with the accumulation of space charges.