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Dielectric properties of In-Se-Te glassy alloys

机译:Dielectric properties of In-Se-Te glassy alloys

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In this paper, the dielectric properties of In_(40)Se_xTe_(60-x) glassy alloys (x = 10, 20 & ,30) have been reported. These measurements are carried out as a function of temperature and frequency, in the range 120-350 KAPPA and 0.1-10 kHz respectively. The frequency and temperature dependence of dielectric constant e' and dielectric loss s" is almost similar in nature in all the alloys and the experimental results indicate that dielectric dispersion sets in at temperature exceeding 150 KAPPA and is more prominent at lower frequencies, epsilon' and epsilon" values as a function of temperature and frequency are maximum for x = 20 alloy, though similar behaviour is observed in all the samples. The experimental results seem to be explained in terms of the theory of dielectric dispersion based on two electrons hopping over a potential barrier. The frequency dependence of dielectric loss in present set of glasses at a fixed temperature is in good agreement with theory of dielectric dispersion.

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