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

Structural and Magnetic Characterizations of Ni-Zn-Co Ferrite Nanoparticles Synthesized by Sol-Gel Autocombustion Method
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]
Issued Date
Article Type
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
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.
American Scientific Publishers
Related Researcher
  • 김철기 Kim, CheolGi 화학물리학과
  • Research Interests Magnetic Materials and Spintronics; Converging Technology of Nanomaterials and Biomaterials; Bio-NEMS;MEMS
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Department of Physics and Chemistry Lab for NanoBio-Materials & SpinTronics(nBEST) 1. Journal Articles


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