Structural and magnetic properties of nano-crystalline Ni–Zn ferrites synthesized using egg-white precursor

Nano-crystalline nickel–zinc ferrites of different compositions; Ni1−xZnxFe2O4 (x=0.0–1.0) were prepared by a precursor method involving egg-white and metal nitrates. An appropriate mechanism for the egg-white-metal complexation was suggested. Differential thermal analysis-thermogravimetry, X-ray di...

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Bibliographic Details
Published in:Journal of magnetism and magnetic materials 2012-07, Vol.324 (14), p.2258-2264
Main Authors: Gabal, M.A., El-Shishtawy, Reda M., Al Angari, Y.M.
Format: Article
Language:English
Subjects:
Chemical synthesis methods
Condensed matter: electronic structure, electrical, magnetic, and optical properties
Cross-disciplinary physics: materials science
rheology
Egg-white
Exact sciences and technology
Ferrites
Magnetic properties
Magnetic properties and materials
Magnetic properties of nanostructures
Materials science
Methods of nanofabrication
Nanocrystals
Nickel
Ni–Zn ferrite
Physics
Precursors
Spinel
Susceptibility
Transmission electron microscopy
VSM
X-rays
XRD
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Summary:Nano-crystalline nickel–zinc ferrites of different compositions; Ni1−xZnxFe2O4 (x=0.0–1.0) were prepared by a precursor method involving egg-white and metal nitrates. An appropriate mechanism for the egg-white-metal complexation was suggested. Differential thermal analysis-thermogravimetry, X-ray diffraction (XRD), transmission electron microscopy (TEM), Fourier transform infrared spectroscopy (FT-IR), vibrating sample magnetometer and AC-magnetic susceptibility measurements were carried out to investigate chemical, structural and magnetic aspects of Ni–Zn ferrites. XRD confirmed the formation of spinel cubic structure. The average crystallite size was calculated using line broadening in XRD patterns. Structural parameters like lattice constant, X-ray density, bond lengths and inter-cationic distance were determined from XRD data. TEM showed agglomerated particles with average size agreed well with that estimated using XRD. FT-IR spectra confirm the formation of spinel structure and further lends support to the proposed cation distribution. Zn-content was found to have a significant influence on the magnetic properties of the system. The changes in the magnetic properties can be attributed to the influence of the cationic stoichiometry and their occupancy in the specific sites. ► Nano-crystalline Ni–Zn ferrites were prepared through egg-white precursors. ► An appropriate mechanism for the complexation was suggested. ► Structural and magnetic properties were characterized using different techniques. ► The effect of Zn-substitution was studied and discussed.
ISSN:0304-8853
DOI:10.1016/j.jmmm.2012.02.112