Morphology of nanocluster-assembled films. (a) A TEM micrograph showing the smaller clusters and bigger size agglomerates of FeAu film. (b) An SEM picture depicting the nanoporous structure of the FePd film.
Resistivity behaviour of nanoclusters. (a) Temperature dependence of Fe-Au nanocluster film showing an activated conduction. The Inset shows a fit to the resistivity data using the ES model. (b) Insulator to metal transition observed for Fe-Pt film by decreasing the oxide layer surrounding the nanoclusters. (Tc = transition temperature).
A schematic representation of the core shell structure, showing the overall porous structure consisting of cluster agglomerates.
Hopping distance/localization length. The behaviour of the ratio of hopping distance to localization length as a function of temperature for the nanocluster assembled films.
Values of parameters obtained from fitting the resistivity vs. temperature data to ρ (T) = ρ0 exp (T0/T)x.
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