Abstract
The specific electric conductivity of glassy and crystallized samples of composition Na2O · Al2O3 · 2SiO2 has been determined. Diffusion coefficients of sodium ions have been determined by the sectioning method with the measurement of the residual activity 22Na isotope. The parameters of the temperature dependence and values of the diffusion correlation factor have been calculated. A significant difference of the diffusion mobility of sodium ions in the glassy and crystallized samples has been found.
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