非晶态Li+导体分相和晶化过程中的相界效应

非晶态Li⁺导体B₂O₃-0.7Li₂O-0.7LiCl-0.1Al₂O₃在等温处理过程中,其电导率先随时间升高,出现峰值后下降,随后出现两个平台。这是由于材料的分相和晶化所致。本文据相界效应观点,认为不同相之间界面附近有一高电导率层,它对电导率的贡献补偿和超过了由于分相和晶化的体效应所引起的电导率下降。由此,对这种材料的电导率随时间变化曲线给出了解释。关键词：

INTERFACE EFFECT PETWEEN DIFFERENT PHASES IN THE PROCESS OF PHASE SEPARATION AND CRYSTALLIZATION OF AN AMORPHOUS Li+ CONDUCTOR

We found that, in the isothermal treatment process of the amorphous Li⁺ conductor B₂O₃-0.7 Li₂O-0.7 LiCl-0.1 Al₂O₃, the plot of the conductivity vesus time rises at first, then, after passing a maxium falls monotonically, and followed by two flat sections. It has been established that these phenomena are due to the phase sparation and crystallization of this amorphous material. In this work, we develop a view point of interface effect between different phases, i.e. we consider that there is a high conductivity layer at the interface between different phases and its contribution compensates or exceeds the decrease of conductivity caused by the bulk effect, of the crystallization. On the basis of this interface effect, an explanation about the above-mentioned experimental plot is given.