Abstract
The electrical properties of glasses of the 8Na2O–(22–x)B2O3–70SiO2–x Fe2O3 system, where x varies from 0.3 to 10 mol %, were studied. The glasses were heat treated at temperatures of 550 and 700°C for 144 and 2 h, respectively. When comparing the results of the measurements of the electrical resistance and the calculated values of activation energy of electrical conductivity of the iron-containing glasses and ironfree glass of the 8Na2O · 22B2O3 · 70SiO2 composition, it was concluded that the ionic conductivity is observed in the studied Fe2O3-containing glasses. An increase in conductivity with increasing content of Fe2O3 was observed for glasses that was heat treated at 700°C for 2 h.
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