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Journal of Physical Studies 9(3), 238–242 (2005)
DOI: https://doi.org/10.30970/jps.09.238
INVESTIGATION OF MEYER-NELDEL RULE IN THIN FILMS OF
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In the present paper, we report on the temperature dependence of conductivity in thin films of Se$_{80 - x}$Te$_{20}$Sb$_{x}$ in three different cases. In the first case, the films are in amorphous state. In the second case, the films are in partially crystalline state and in the third case; the films are in crystalline state. We have observed Meyer-Neldel (MN) rule between pre-exponential factor and activation energy in the first case, where Se$_{80 - x}$Te$_{20}$Sb$_{x}$ thin films are in amorphous state. However, in the second and third cases, it has been found that the plot of $\ln σ _{0}$ vs. $Δ E$ departs from MN rule. This indicates that MN rule is observed in chalcogenide glasses due to their short-range order structure.
PACS number(s): 63.22.Kr, 63.22.+m, 71.38.-k, 73.22.-f