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Synthesis and Magnetic Properties of Cobalt Ferrite Nanoparticles

Published online by Cambridge University Press:  25 April 2012

Morad F. Etier
Affiliation:
Institute for Materials Science, University of Duisburg-Essen, Essen, Germany
Vladimir V. Shvartsman
Affiliation:
Institute for Materials Science, University of Duisburg-Essen, Essen, Germany
Frank Stromberg
Affiliation:
Experimental Physics, Faculty of Physics, University of Duisburg-Essen, Duisburg, Germany
Joachim Landers
Affiliation:
Experimental Physics, Faculty of Physics, University of Duisburg-Essen, Duisburg, Germany
Heiko Wende
Affiliation:
Experimental Physics, Faculty of Physics, University of Duisburg-Essen, Duisburg, Germany
Doru C. Lupascu
Affiliation:
Institute for Materials Science, University of Duisburg-Essen, Essen, Germany
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Abstract

Nanopowders of cobalt iron oxide (CoFe2O4) were successfully fabricated by the co-precipitation method followed by a technique to prevent particle agglomeration. Particle sizes were in the range of 24 to 44 nm. The size of cobalt iron oxide particles decreases with increasing the concentration of the precipitation agent. The crystal structure was confirmed by X-ray diffraction (XRD), the chemical composition by energy dispersive spectroscopy (EDS), and phase changes by thermogravimetric differential thermal analysis (TGA-TDA). The particle morphology was analyzed by scanning electron microscopy (SEM). Magnetic properties were investigated by SQUID magnetometry and Mössbauer spectroscopy. Being nearly monodisperse and non-agglomerated the prepared cobalt iron oxide powders are the base for synthesizing magnetoelectric composites embedded in a ferroelectric BaTiO3 matrix.

Type
Research Article
Copyright
Copyright © Materials Research Society 2012

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