Electrical and dielectric properties of glass system NaPO3–KHSO4

Glass samples have been prepared in the NaPO3–KHSO4 binary system with the classical melting, casting and annealing steps. Electrical and dielectrical properties of glass samples were studied. Measurements of DC and AC conductivity and complex electrical permittivity of xNaPO3–(100 − x)KHSO4 glass system were carried out at temperatures ranging from room temperature to temperature located 15 °C below glass transition temperature Tg. Results showed that changes of NaPO3 concentration considerably affect values of observed parameters. DC conductivity of glass increases as NaPO3 concentration grows until concentration x = 60. However, beyond this value a sharp decrease of DC conductivity was observed. In addition relaxation times showed abrupt changes at concentration x = 60, corresponding to the lowest relaxation times at the temperature 90 °C.

Research Highlights
► Measurements of DC and AC conductivity and complex electrical permittivity.
► Influence of NaPO3 concentration changes on the electrical parameters.
► Significant differences in both activation energy and electrical conductivity.