The effect of Varying the Ratio x on the Electrical and Dielectric Properties of (ZnFe2O4) x/ SiO2 (1-x) Nanocomposites | ||||
| Egyptian Journal of Solids | ||||
| Article 14, Volume 32, Issue 2, 2009, Page 299-309 PDF (251.33 K) | ||||
| DOI: 10.21608/ejs.2009.148855 | ||||
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| Abstract | ||||
| Samples of varying x (ZnFe2O4)/ (1-x) SiO2 (where x= 0.4, 0.6 and 0.8) nanocomposites were prepared by sol-gel method. The influence of ZnFe2O4 content on the structural, electrical and dielectric properties of the nanocomposites was studied. The samples were characterized by X-ray diffraction (XRD), thermogravimetric analysis (TGA) and differential thermal analysis (DTA). The XRD spectra showed that, Zn-ferrite particle size lies in the range of 5.17-34.6 nm. Electrical conductivity of the samples increases as the temperature increases indicating that the samples have semiconductor like behavior. It is also found that the electrical resistivity and dielectric constant of the samples changes considerably with zinc-ferrite content and the sintering temperatures. The variation of electrical resistivity and dielectric constant with zinc-ferrite content are found to be opposite to each other. The possible mechanism for the influence of ZnFe2O4 content on the electrical properties is discussed in this paper. | ||||
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