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Dr. اMahmoud Makled :: Publications: |
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| Title: | Effect of growing barium ferrite phases on the electrical conductivity in Fe2O3/BaCo3 composites. |
| Authors: | M . K. El-Mansy , N. M. Shash , M.. H. Makled , E. M.. Diefallah. |
| Year: | 1998 |
| Keywords: | Heat treatment; Barium ferrite; Electrical conductivity |
| Journal: | Mat. Chem. |
| Volume: | 52 |
| Issue: | 1 |
| Pages: | 71-77 |
| Publisher: | Elsevier |
| Local/International: | International |
| Paper Link: | |
| Full paper | Not Available |
| Supplementary materials | Not Available |
| Abstract: |
The effect of heat treatment on the temperature dependence of electrical conduction for a mixture of Fe2O3 and BaCO3 with 1: 1 mole ratio has been studied between room temperature and 573 K. The results suggest protonic conduction at a relatively low temperature range, whereas small polaron jumping between Fe2+ and Fe3+ dominates at a relatively high temperature range. The electrical conduction at high fields exhibits a quadratic dependence of current on the applied potential which predicts the formation of ... |
