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The present paper reports on thermally stimulated current measurements in a-Se 99.5 Bi 0.5 thin films at different heating rates (β 1 = 2.17 K/min, β 2 = 2.85 K/min, β 3 = 5.00 K/min). A well-defined TSC peak at a particular temperature has been observed which shifts toward higher temperatures (T 1 = 362 K, T 2 = 372 K, T 3 = 392 K)...
Temperature and frequency dependence of a.c. conductivity have been studied in glassy Se 70 Te 30−x Sb x (4 ≤ x ≤ 10) alloys. The observation of Further Meyer–Neldel rule in case of a.c. conductivity is reported. The observation of the correlation between Meyer–Neldel pre-factor σ 00 and Meyer–Neldel energy is explained by multiple excitations stimulated by optical...
In the present paper, we report the observation of the Meyer–Neldel rule (MNR) in thermally activated high field conduction in bulk samples of glassy Se 100−x Sb x alloys. We have investigated Meyer–Neldel rule by two different approaches.In first approach, the temperature dependence of d.c. conductivity is studied at different electric fields without changing the composition of the...
The present paper reports the d.c. conductivity measurements at high electric fields in vacuum-evaporated thin films of amorphous Se 80 Te 20 , Se 75 Te 20 Ge 5 and Se 75 Te 20 Sb 5 systems. Current-voltage (I-V) characteristics have been measured at various fixed temperatures. In all the samples, at low...
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