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The effect of Ge additive on the physical and dielectric properties of Se75Te25 and Se85Te15 glassy alloys has been investigated. It is inferred that on adding Ge, the physical properties i.e., average coordination number, average number of constraints and average heat of atomization increase but lone pair electrons, fraction of floppy modes, electronegativity, degree of crosslinking and deviation...
Thin films of Se85 − xTe15Znx (x = 0, 2, 4, 6 and 10) glassy alloys have been deposited onto a chemically cleaned glass substrate by thermal evaporation technique under vacuum. The analysis of transmission spectra, measured at normal incidence, in the spectral range of 400–2500 nm helped us in the optical characterization of thin films under study. From the analysis of transmission spectra, the...
In this paper we report the effect of Pb incorporation in the dielectric properties of a-Se75In25 glassy alloy. The temperature and frequency dependence of the dielectric constants and the dielectric losses in glassy Se75In25−xPbx (x = 0, 5, 10 and 15) alloys in the frequency range (1 kHz-5 MHz) and temperature range (300–340 K) have been measured. A detailed analysis shows that the dielectric...
The present paper reports the DC conductivity measurements at high electric fields in vacuum evaporated amorphous thin films of a-Se100−xSnx (x = 0, 2, 4, 6) glassy alloys. Current-voltage (I–V) characteristics have been measured at various fixed temperatures. In these samples, at low electric fields, ohmic behaviour is observed. However, at high electric fields (E ∼ 104 V/cm), non-ohmic behaviour...
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