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Structural and Magnetic Characterizations of Ni-Zn-Co Ferrite Nanoparticles Synthesized by Sol-Gel Autocombustion Method

Title
Structural and Magnetic Characterizations of Ni-Zn-Co Ferrite Nanoparticles Synthesized by Sol-Gel Autocombustion Method
Authors
Ramesh, S[Ramesh, S.]Dhanalakshmi, B[Dhanalakshmi, B.]Sekhar, BC[Sekhar, B. Chandra]Rao, PSVS[Rao, P. S. V. Subba]Rao, BP[Rao, B. Parvatheeswara]Kim, C[Kim, CheolGi]
DGIST Authors
Kim, C[Kim, CheolGi]
Issue Date
2016-10
Citation
Journal of Nanoscience and Nanotechnology, 16(10), 11094-11098
Type
Article
Article Type
Article
Keywords
Cobalt CompoundsCubic Spinel StructureElectron MicrographFerriteFerrite NanoparticlesFourier Transform Infrared SpectroscopyHigh Resolution Transmission Electron MicroscopyMagnetic CharacterizationMagnetic MomentsMagnetic PropertiesMagnetismNanomagneticsNanoparticlesNickelParticle SizeSaturation MagnetizationSol-Gel Auto-CombustionSol-Gel AutocombustionSol-Gel ProcessSol-GelsStretchingStretching VibrationsStructural and Magnetic PropertiesStructural ModificationsSynthesis (Chemical)ThermoanalysisTransmission Electron MicroscopyX Ray AnalysisZinc
ISSN
1533-4880
Abstract
Cobalt substituted Ni-Zn ferrite nanoparticles with the formula, Ni0.4Zn0.6-xCoxFe2O4, where x varies from 0.00 to 0.25 in steps of 0.05, were prepared by sol-gel autocombustion method and analyzed for their structural and magnetic properties. The synthesized nanoparticles were subjected to X-ray analysis, transmission electron microscopy, Fourier transform infrared spectroscopy, thermal analysis and magnetic measurements. The X-ray patterns confirm cubic spinel structures with the crystallite sizes in the range from 31.72 nm to 36.87 nm. The particle sizes estimated using electron micrographs are in good agreement with the crystallite sizes obtained from the X-ray data. Infrared data confirms the spinel structure by showing FeA-O and FeB-O stretching vibrations while the thermal data hints at a slight weight gain due to oxidation. The obtained magnetic data suggests a marginal increase in saturation magnetization with the Co substitution at x = 0.10 and 0.25. The results are analyzed in terms of the compositional and structural modifications, and it was found that the variation of magnetic moment was governed by a corresponding change in the oxygen positional parameter in these materials. Copyright © 2016 American Scientific Publishers All rights reserved.
URI
http://hdl.handle.net/20.500.11750/2176
DOI
10.1166/jnn.2016.13296
Publisher
American Scientific Publishers
Files:
There are no files associated with this item.
Collection:
Emerging Materials ScienceETC1. Journal Articles


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