| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1691582 | Vacuum | 2009 | 5 Pages |
Abstract
The observed variations of real part AC electrical conductivity with temperature and frequency Ïreal(T, f) in the as-deposited films display transition from dielectric to metallic behaviour when crossing the percolation threshold xC in the studied nanocomposites. After annealing of the samples below the xC the Ïreal(T, f) progress follows the hopping law of electron conductivity with sigmoidal frequency dependence. The samples being far beyond the percolation threshold revealed transition from metallic to activational Ïreal(T) law after high-temperature annealing attributed to the internal oxidation of metallic nanoparticle by excess of oxygen presented in the as-deposited samples.
Related Topics
Physical Sciences and Engineering
Materials Science
Surfaces, Coatings and Films
Authors
P. Å»ukowski, T. KoÅtunowicz, J. Partyka, Yu. A. Fedotova, A.V. Larkin,