Electrical and Dielectric Properties of Borate Glasses
Some common features of the “well known” dielectric relaxation in oxide glasses are discussed.
A structural model of glasses which may be generally appropriate to account for electric properties is suggested. Indirect experimental evidence for the model is briefly described.
In this paper we will be only concerned with the first relaxation that occurs below the softening temperature in all glasses containing a single modifying ion; that is, the well known dielectric relaxation due to e.g. sodium ion migration. This relaxation is also mechanically active, and gives rise to an analogous mechanical relaxation. We will not discuss relaxations due to surface polarization and electrode effects, or the mixed alkali effect.
KeywordsDielectric Relaxation Borate Glass Mobile Species Dipolar Relaxation Conductivity Relaxation
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