Magnetic properties of zinc-substituted cobalt ferric oxide nanoparticles: Correlation with annealing temperature and particle size

Nanocrystalline zinc (Zn)-substituted cobalt ferric oxide (CoFe2O4) was prepared through chemical co-precipitation; the prepared samples were annealed at 600°C, 750°C and 900°C. The crystallite size, microstructure and magnetic properties of the prepared and annealed samples were studied by using X-...

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Bibliographic Details
Published in:Materials science in semiconductor processing 2014-05, Vol.21, p.33-37
Main Authors: Azhagushanmugam, S.J., Suriyanarayanan, N., Jayaprakash, R.
Format: Article
Language:English
Subjects:
Annealing
Applied sciences
Co-precipitation
Condensed matter: electronic structure, electrical, magnetic, and optical properties
Cross-disciplinary physics: materials science
rheology
Domain effects, magnetization curves, and hysteresis
Exact sciences and technology
Fourier transforms
Heat treatment
Infrared spectroscopy
Magnetic material
Magnetic properties
Magnetic properties and materials
Magnetization curves, magnetization reversal, hysteresis, barkhausen and related effects
Materials science
Materials synthesis
materials processing
Metals. Metallurgy
Nanoparticles
Nanopowders
Nanoscale materials and structures: fabrication and characterization
Particle size
Physics
Production techniques
Semiconductors
Zinc
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Summary:Nanocrystalline zinc (Zn)-substituted cobalt ferric oxide (CoFe2O4) was prepared through chemical co-precipitation; the prepared samples were annealed at 600°C, 750°C and 900°C. The crystallite size, microstructure and magnetic properties of the prepared and annealed samples were studied by using X-ray powder diffraction (XRD), Transmission Electron Microscopy (TEM), Fourier Transform Infrared Spectroscopy (FTIR), Energy Dispersive Spectroscopy (EDS) and Vibrating Sample Magnetometry. The structural investigations carried out by XRD reveal that the particle size and lattice constant of single phase spinal structured Zn substituted CoFe2O4 increase with the increase of annealing temperature. The FTIR spectra for the samples measured in the range of 4000–400cm−1 exhibit symmetric stretching mode of vibration of tetrahedral and octahedral sites. Furthermore, Zn substituted CoFe2O4 nanoparticles have the crystallite size in the range ~13–65nm, as confirmed by TEM. The elemental analysis was obtained from EDS. Finally, increased annealing temperature resulting in increased particle size and the impact on magnetic properties of CoFe2O4 nanoparticles is a significant finding of this study.
ISSN:1369-8001
1873-4081
DOI:10.1016/j.mssp.2014.01.023