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Indian Journal of Pure & Applied Physics (IJPAP) >
IJPAP Vol.44 [2006] >
IJPAP Vol.44(10) [October 2006] >
| Title: | Electrical measurements of Se85-xTe15Sbx glasses |
| Authors: | Saraswat, Vibhav K
Singh, K
Saxena, N S |
| Keywords: | Glass
Critical composition
Bulk
Se-Sb bonding
Poole-Frenkel conduction mechanism |
| Issue Date: | Oct-2006 |
| Publisher: | CSIR |
| IPC Code: | G01R |
| Abstract: | Temperature dependence of I-V characteristics and dc conductivity of Se85-xTe15Sbx
(where x= 2, 4, 6, 8 and 10) glasses
in the form of thin pellets has been studied. The pellets have been prepared
from the ingots of glasses in the powder form. It is quite evident from I-V characteristics that the glass
containing 4 at wt % of Sb allow maximum current to pass through itself as
compared to its other counterparts of the series. The linear relationship
between ln (I) and V1/2 strongly suggests the
type of conduction as the Poole-Frenkel. The deviation from ohmic behaviour at
lower voltages towards the non-ohmic behaviour at higher voltages is due to the
additional thermal effects at higher temperatures induced in the sample. The
electrical conductivity of these samples for the above-mentioned compositions
using their I-V characteristics has
been determined. The variations of electrical conductivity with composition at
all temperatures show that Se81Te15Sb4 glass
has the maximum conductivity. This variation is explained using the bonding
between Se and Sb at different compositions. Hence, the composition Se81Te15Sb4
is more chemically ordered and electrically conducting as compared to other
members of the series. |
| Page(s): | 782-785 |
| ISSN: | 0975-1041 (Online); 0019-5596 (Print) |
| Source: | IJPAP Vol.44(10) [October 2006]
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