Abstract:In this paper, we have studied the temperature and frequency dependence behavior of ac conductivity in the glassy system Se 80−x Te 20 Sn x (0 x 10). All the measurements have been carried out in the frequency range 1-500 kHz and in the temperature range from room temperature to the glass transition temperature T g . The density of defect states has been determined using the correlated barrier-hopping model for all these glassy alloys. The appearance of local extrema in the density of defect states is explaine… Show more
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