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外文期刊>Digest Journal of Nanomaterials and Biostructures
>THE IMPACT OF DIVALENT Co2+ AND TETRAVALENT Zr4+ TRANSITIONMETAL CATIONS ON STRUCTURAL, ELECTRICAL AND DIELECTRICPARAMETERS OF MnFe2O4 NANOCRYSTALLINE SPINEL FERRITESFABRICATED VIA WET CHEMICAL ROUTE
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THE IMPACT OF DIVALENT Co2+ AND TETRAVALENT Zr4+ TRANSITIONMETAL CATIONS ON STRUCTURAL, ELECTRICAL AND DIELECTRICPARAMETERS OF MnFe2O4 NANOCRYSTALLINE SPINEL FERRITESFABRICATED VIA WET CHEMICAL ROUTE
Mn1-2xZrxFe2-yCoyO4nano-ferrites were synthesized by micro-emulsion routine followed bystructural elucidation by thermogravimetric analysis (TGA) andX-ray diffraction (XRD).TGA analysis revealed the phase formation temperature 950 oC and about 25 % weightloss was observed. This significant weight loss attributed to the use of surfactantmolecules during synthesis. The synthesized nanoparticles of all compositions of Mn1-2xZrxFe2-yCoyO4nano-ferrites were analysed by X-ray diffraction (XRD). The XRDconfirmed the formation of face centered cubic spinel structure of doped and un-dopedMnFe2O4nano-ferrites. The effect of dopants (Co2+ and Zr4+) on structural and dielectricparameters of manganese nano-ferrites has been investigated. The size of nano-ferrites, asdetermined by Scherrer formula was in the range of 30-75 nm. The nano-ferrites withcrystallite size 50 nm have significant signal to noise ratio and therefore they can beutilized in smart advanced technological electronic devices. The variation in the latticeparameters and crystallite size revealed an inhomogeneous change. This inhomogeneousbehavior endorsedthe replacement of higher ionic radii of Zr4+ on manganese site in theferrite. The dielectric parameters were investigated up to 3GHz frequency range. Adamping effect was observed in the dielectric constant, loss factor due to inclusion of Zr-Coin the Mn-ferrites.
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