MRS Proceedings
- MRS Proceedings / Volume 1398 / 2012
- Copyright © Materials Research Society 2012
- DOI: http://dx.doi.org/10.1557/opl.2012.699 (About DOI)
Articles
Synthesis and Magnetic Properties of Cobalt Ferrite Nanoparticles
2011 MRS Fall Meeting.
Morad F. Etiera1, Vladimir V. Shvartsmana1, Frank Stromberga2, Joachim Landersa2, Heiko Wendea2 and Doru C. Lupascua1
a1 Institute for Materials Science, University of Duisburg-Essen, Essen, Germany
a2 Experimental Physics, Faculty of Physics, University of Duisburg-Essen, Duisburg, Germany
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.
Key Words:
- magnetic properties;
- core/shell;
- oxide
