Abstract
A low frequency bridge and a d.c. charging technique were combined to study dielectric data from 10 <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">3</sup> cycles/second to below 10 <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">-3</sup> cycles/second. This information was assembled with supplementary high frequency data. Two glasses, which represent extremes in dielectric behavior were studied. A comparison of their dielectric response indicates a significant difference in their dielectric constant dispersions. The dielectric constant response, located in a region many orders of ten lower in frequency than the d.c. to a.c. resistivity transition, revealed an extremely large nonlinear dielectric constant dispersion. This dispersion can be classified as an inter-facial polarization and is logically associated with the d.c. resistivity. The dielectric constant response, located in the frequency region adjacent to the d.c. and a.c. resistivity transition, revealed a normal linear dielectric constant dispersion. This dispersion thus appears to be associated with the a.c. resistivity.
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