Optical and magnetic properties of Mg-doped ZnFe2O4 nanoparticles prepared by rapid microwave combustion method

[Display omitted] •Nano-sized Mg-doped ZnFe2O4 was synthesized by the microwave combustion method.•The as-synthesized samples showed good optical and magnetic properties.•Investigated the effect of Mg-doping on ZnFe2O4 systematically.•Mg concentration increases in ZnFe2O4, the ferromagnetic nature i...

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Bibliographic Details
Published inSuperlattices and microstructures Vol. 64; pp. 118 - 131
Main Authors Manikandan, A., Judith Vijaya, J., Sundararajan, M., Meganathan, C., Kennedy, L. John, Bououdina, M.
Format Journal Article
LanguageEnglish
Published Elsevier Ltd 01.12.2013
Subjects
Cations
Combustion
Crystallites
Electron microscopy
Ferrites
Magnesium
Magnetic properties
Magnetization
Microwaves
Nanostructures
Optical properties
Spectra
X-ray diffraction
X-rays
Ferrites
X-ray diffraction
Nanostructures
Electron microscopy
Optical properties
Magnetic properties
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Summary:[Display omitted] •Nano-sized Mg-doped ZnFe2O4 was synthesized by the microwave combustion method.•The as-synthesized samples showed good optical and magnetic properties.•Investigated the effect of Mg-doping on ZnFe2O4 systematically.•Mg concentration increases in ZnFe2O4, the ferromagnetic nature increases. Mg-doped ZnFe2O4 samples were prepared by a microwave combustion method. The obtained samples were characterized by powder X-ray diffraction (XRD), high resolution scanning electron microscopy (HR-SEM), energy dispersive X-ray analysis, UV–Visible diffuse reflectance spectra (DRS), photoluminescence (PL) spectra and vibrating sample magnetometer (VSM). XRD results confirm the formation of cubic spinel-type structure with an average crystallite size in the range of 15–43nm. Lattice parameter decreases with increasing Mg concentration, due to the smaller ionic radius of Mg2+ ion. The HR-SEM images show the morphology of the samples as spherical shaped particles in agglomeration. The broad visible emission band is observed in the entire PL spectrum. The estimated band gap energy is found to decrease with increasing Mg content (2.15–1.42eV). The magnetization showed an increasing trend with increasing Mg concentration (x=0.5), due to the rearrangement of cations at tetrahedral and octahedral sites.
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ISSN:0749-6036
1096-3677
DOI:10.1016/j.spmi.2013.09.021