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Dielectric behavior of hexaferrites BaCo2−xZnxFe16O27 |
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| Authors: | H. Ismael M. K. El Nimr A. M. Abou El Ata M. A. El Hiti M. A. Ahmed A. A. Murakhowskii |
| Affiliation: | a Department of Physics, Faculty of Science, Tanta University, Tanta, Egypt b Department of Physics, Faculty of Science, Tishreen University, Latakia, Syria c Department of General Physics, A.M. Gorkii University, 310-077, Kharkov, Ukraine |
| Abstract: | The dielectric constant (′) and dielectric loss (tan δ) for hexaferrites BaCo2−xZnxFe16O27 have been studied as a function of frequency (f), temperature (T) and composition (x). The experimental results indicate that ′ and tan δ above the relaxation frequency only decrease as the frequency increases and as the temperature decreases. Tan δ shows the dielectric relaxation at certain critical frequencies which rise as temperature increases. The activation energy for the dielectric relaxation (ED), ′, and tan δ are found to be minimum for x = 0.8. |
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