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Frequency: Quarterly
ISSN: 1941-7020 (Print)
ISSN: 1941-7039 (Online)
Research Article Open Access

Electrical Properties of Cobalt Oxide/Silica Nanocomposites Obtained by Sol-Gel Technique

Gomaa A.M. Ali1, Osama A. Fouad2 and Salah A. Makhlouf3
  • 1 Al-Azhar University, Egypt
  • 2 Central Metallurgical Research and Development Institute, Egypt
  • 3 Al Imam Mohammad Ibn Saud Islamic University (IMSIU), Saudi Arabia

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.

American Journal of Engineering and Applied Sciences
Volume 9 No. 1, 2016, 12-16

DOI: https://doi.org/10.3844/ajeassp.2016.12.16

Submitted On: 17 October 2015 Published On: 18 November 2015

How to Cite: Ali, G. A., Fouad, O. A. & Makhlouf, S. A. (2016). Electrical Properties of Cobalt Oxide/Silica Nanocomposites Obtained by Sol-Gel Technique. American Journal of Engineering and Applied Sciences, 9(1), 12-16. https://doi.org/10.3844/ajeassp.2016.12.16

Open AccessCopyright: © 2016 Gomaa A.M. Ali, Osama A. Fouad and Salah A. Makhlouf. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

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Keywords

  • Sol-Gel
  • Cobalt Oxide/Silica
  • Nanocomposites
  • Electrical Conductivity