Effect of Ag Incorporation on the Correlation Between Pre-Exponential Factor and Activation Energy of Thermally Activated High Field Conduction in Ge20Se80 Alloy
The aspiration of the present work is to see the effect of Ag incorporation on the thermally activated high field conduction in glassy Ge20Se80 alloy in terms of temperature and voltage dependence of d.c. conductivity σ. We have observed that the pre-factor σo of d.c. conductivity varies with activation energy ΔE according to Meyer-Neldel rule (MNR). However, both parameters follow inverse MNR after Ag incorporation in glassy Ge20Se80−x Ag x (x = 0, 10, 15, 20) system. The present experimental work opens a gateway for a debate regarding to what extent the Normal MNR and Inverse MNR are reliant on material incorporation or the value of Meyer-Neldel activation energies (either large or small).
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Document Type: Research Article
Publication date: December 1, 2013
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