Gomaa A.M. Ali, Osama A. Fouad and Salah A. Makhlouf
Abstract
This work is an extension of our previous studies on cobalt oxide nanoparticles impeded in a silica matrix. Here we study the preparation and characterization of high cobalt content materials (60-90 wt%). In addition, the DC electrical conductivity of the prepared materials in a wide temperature range (350-673 K) was measured and discussed. The activation energy has been obtained according to Mott’s Small-Polaron Hopping (SPH) and Mott’s and Greaves Variable Range Hopping (VRH) models.
Publication Date
1/7/2016
Publisher
American Journal of Engineering and Applied Sciences
جمعه عبدالجواد محمد على | Gomaa A. M. Ali | 20315