THE ELECTRICAL PROPERTIES OF Mg-Cu-Zn FERRITES IRRADIATED BY γ-RAYS OF 60Co SOURCE
- 1 Department of Basic Engineering Science, Faculty of Engineering, Menoufiya University, Shebin El-Kom, Egypt
- 2 Cyclotron Facility, Nuclear Research Center, Atomic Energy Authority, Cairo 13759, Egypt
- 3 Department of Physics, Faculty of Science, Taif University, Taif, 888 Hawiya, Saudi Arabia
Abstract
Ferrite samples with chemical formula MgxCu0.5-xZn0.5Fe2O4 (x = 0.0, 0.2 and 0.4) was prepared by the conventional ceramic method. The enhanced changes in the dc/ac resistivity and the dielectric constant due to γ-rays irradiation by 60Co source were measured using the two probes technique. The samples showed decreasing of their resistivity at room temperature after irradiation for both dc and ac applied electric fields. Temperature dependence curves of the dc resistivity, before and after irradiation, showed three regions with different activation energies. It was also observed that the activation energy decreased after irradiation at every region. The frequency dependence of ac resistivity and dielectric constant parameters were investigated before and after irradiation process. Both real part (ε’) and imaginary part (ε") of the dielectric constant were decreased due to irradiation. These results were discussed in the view of gamma rays interaction with ferrite lattice.
DOI: https://doi.org/10.3844/ajassp.2014.109.118
Copyright: © 2014 Mohamed Eltabey, H. Ebrahim Hassan and Ismail Abd Elrahim Ali. 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
- Gamma Irradiation
- Mg-Cu-Zn Ferrites
- Resistivity
- Activation Energy
- Dielectric Constant