Electrical Conductivity and Structural Properties of Cesium Iron Phosphate Glasses:A Potential Host for Vitrifying Nuclear Waste

摘要

The thermally stimulated current (TSC) and dc conductivity for iron phosphate glasses containing up to 28 mol% Cs_2O have been measured in a temperature range from 120 to 400 K.The dc conductivity and activation energy were constant and independent of Cs_2O content.With increasing cesium concentration in cesium iron phosphate glasses the slowly moving cesium ions are more tightly bound to the non-bridging oxygen ions and make no measurable contribution to dc conductivity.