玻璃态网络的快离子导电与柔性
Fast-ion conduction and flexibility of glassy networks
摘要：
在干固体电解质（AgI）x（AgPO_3）_（1-x）玻璃中，当AgI添加浓度x增加到9.5%和37.8%时，观察到电导率变化的两个阈值。拉曼散射补充量热测量证实，这些阈值的刚性相变的签名，在x = 9.5%的应力刚性到一个均衡（无应力）的刚性相，并在x = 37.8%的均衡刚性到一个灵活的相。在柔性相中，电导率似乎随x的幂次而增加，这与基于三维渗流的理论预测很好地一致。
英文摘要：
We observe two thresholds in the variations of electrical conductivity of dry solid electrolyte (AgI)x(AgPO3)1-x glasses, when the AgI additive concentration x increases to 9.5% and to 37.8%. Raman scattering complemented by calorimetric measurements confirm that these thresholds are signatures of the rigidity phase transitions; at x = 9.5% from a stressed rigid to an isostatically (stress free) rigid phase, and at x = 37.8% from isostatically rigid to a flexible phase. In the flexible phase, the electrical conductivity seems to increase as a power of x, this is in good agreement with the theoretical prediction based on 3d percolation.
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