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https://open.uns.ac.rs/handle/123456789/6975
Nаziv: | The comparative study of the structural and the electrical properties of the nano spinel ferrites prepared by the soft mehanochemical synthesis | Аutоri: | Sekulić, Dalibor Lazarević Z. Jovalekić Rečnik A. Romčević M. Hadžić B. Romčević N. |
Dаtum izdаvаnjа: | 1-јан-2014 | Čаsоpis: | Science of Sintering | Sažetak: | © 2014,International Institute for the Science of Sintering (IISS). All rights reserved. Nano spinel ferrites MFe2O4(M= Ni, Mn, Zn) were obtained by soft mechanochemical synthesis in a planetary ball mill. The appropriate mixture of oxide and hydroxide powders was used as initial compounds. All of this mixture of powders was mechanically activated, uniaxial pressed and sintered at 1100 °C/2h. The phase composition of the powders and sintered samples were analyzed by XRD and Raman spectroscopy. Morphologies were examined by SEM. In this study, the AC-conductivity and DC-resistivity of sintered samples of MFe2O4(M= Ni, Mn, Zn) ferrites were measured at different frequencies and at room temperature. The values of the electrical conductivities show an increase with increasing temperature, which indicated the semiconducting behavior of the studied ferrites. The conduction phenomenon of the investigated samples could be explained on the basis of hopping model. The complex impedance spectroscopy analysis was used to study the effect of grain and grain boundary on the electrical properties of all three obtained ferrites. | URI: | https://open.uns.ac.rs/handle/123456789/6975 | ISSN: | 0350820X | DOI: | 10.2298/SOS1402235S |
Nаlаzi sе u kоlеkciјаmа: | FTN Publikacije/Publications |
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