On the Nature of Current Carriers in Glasses of the NaF-Na2O-B2O3 System

Glasses in the Na^sub 2^O-B^sub 2^O^sub 3^, NaF-Na^sub 2^O-B^sub 2^O^sub 3^, and NaF-B^sub 2^O^sub 3^ systems have been synthesized. The nature of current carriers and their transport numbers in these glasses are determined by the Hittorf and Tubandt techniques. The concentration dependences of the electrical conductivity and the transport numbers are investigated. It is demonstrated that the electricity transport in glasses in the NaF-B^sub 2^O^sub 3^ system is provided by sodium and fluorine ions. The results obtained are interpreted in terms of the microinhomogeneous glass structure.[PUBLICATION ABSTRACT]