Abstract

Measurements of the electrical conductivity of Ag-doped bulk As 2S 3 glasses have been made as functions of temperature, pressure, frequency and Ag doping level. A Debye-like loss peak was observed near 10 4 Hz. The frequency of the loss peak is dependent on temperature, pressure and doping level, but these dependences are different from those of the dc conductivity. The ac loss is attributed to the Maxwell-Wagner losses characteristic of inhomogeneous materials. The materials are presumed to be inhomogeneous mixtures of As 2S 3 and Ag 2S. We have also searched unsuccessfully for ac conductance in several bulk chalcogenide glasses.

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