Peculiarities of the diffusion of silver and sodium ions in phosphate glasses with a high content of Na2O Original Research Article

The conductivity relaxation due to Na+ ions and the decay of radiation-induced centers controlled by Ag+ ion diffusion have been studied in phosphate glasses with a high content of Na2O. Both of the processes display a nonexponential kinetic behavior and are satisfactorily described by the Kohlrausch function. It has been demonstrated that on the molecular level the Kohlrausch function should be interpreted as a sum of exponential decay functions with a distribution of relaxation times rather than the inherently nonexponential function.