Effect of chromium addition on the structural, morphological and magnetic properties of nano-crystalline cobalt ferrite system

Effect of chromium addition on the structural, morphological and magnetic properties of nano-crystalline cobalt ferrite system

Nano-crystalline chromium doped cobalt ferrite powders have been synthesized by PEG assisted hydrothermal route. The structural, morphological and magnetic properties of the products were determined by X-ray diffraction (XRD), scanning electron microscopy (SEM), energy-dispersive X-ray (EDX) spectro...

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Bibliographic Details
Published in:Ceramics international Vol. 38; no. 8; pp. 6671 - 6676
Main Authors: Köseoğlu, Yüksel, Oleiwi Oleiwi, Mousa Ibrahim, Yilgin, Resul, Koçbay, Abdullah N.
Format: Journal Article
Language:English
Published: Elsevier Ltd 01-12-2012
Subjects:
Chromium
Cobalt ferrites
Coercive force
Crystallites
Hydrothermal synthesis
Magnetic nanoparticles
Magnetic properties
Mn–Co spinel ferrites
Nanocrystals
Nanoparticles
Scanning electron microscopy
XRD
Mn–Co spinel ferrites
Hydrothermal synthesis
XRD
Magnetic nanoparticles
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Summary:Nano-crystalline chromium doped cobalt ferrite powders have been synthesized by PEG assisted hydrothermal route. The structural, morphological and magnetic properties of the products were determined by X-ray diffraction (XRD), scanning electron microscopy (SEM), energy-dispersive X-ray (EDX) spectroscopy and vibrating sample magnetometer (VSM). X-ray analysis showed that the samples were cubic spinel. SEM images reveal that the samples' surfaces exhibit well-defined crystalline nanoparticles of spherical shapes with small agglomeration. The addition of Cr3+ ions caused a decrease in the average crystallite size, magnetization and the coercive field of the sample. The observed decreases in saturation magnetization and coercivity are explained on the bases of exchange interactions.
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ISSN:0272-8842
1873-3956
DOI:10.1016/j.ceramint.2012.05.055