Changes of Electrical Properties in Glass Caused by Ultra-Violet Irrdiation

Abstract

The mechanisms of contraction of glass structure caused by ultra-violet irradiation were explained by the authors in terms of the conversion of oxygen ions from the nonbridging to bridging state and the fixation of alkali ions near the oxygen ions. The effects of these structural changes on the electrical properties of glass were examined with the following results: DC resistivity increased by irradiation; ε″ in the low frequency region decreased suggesting the decrease of alkali ion relaxation loss; and in the frequency region of 10⁵-10⁶Hz ε″ increased and ε′ decreased suggesting the shift of the network deformation loss peak to the low frequency side. These results were compatible with the mechanisms proposed by the authors.