Dielectric Relaxation of Vycor-Type Borosilicate Glass

Abstract

Electrical properties of a Vycor-type borosilicate glass were changed by heat treatment at 650°C. The following conclusions were obtained. (1) The observed dielectric relaxation is caused by a conducting path structure. (2) Electrical characteristic of Na₂O⋅B₂O₃ phase in the borosilicate glass are different from those of Na₂O⋅B₂O₃ glass with the same composition. (3) The inherent dielectric relaxation does not occur in both Na₂O⋅B₂O₃ and SiO₂ phases. These results suggest that the dielectric relaxation of oxide glass is ascribable to the conducting path structure.