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Mechanochemical synthesis and characterization of nanodimensional iron–cobalt spinel oxides

Manova, Elina and Paneva, Daniela and Kunev, Boris and Estournès, Claude and Rivière, E. and Tenchev, K. and Léaustic, A. and Mitov, Ivan Mechanochemical synthesis and characterization of nanodimensional iron–cobalt spinel oxides. (2009) Journal of Alloys and Compounds, vol. 485 (n° 1-2). pp. 356-361. ISSN 0925-8388

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Official URL: http://dx.doi.org/10.1016/j.jallcom.2009.05.107

Abstract

Iron–cobalt spinel oxide nanoparticles, CoxFe3−xO4 (x = 1, 2), of sizes below 10 nm have been prepared by combining chemical precipitation with high-energy ball milling. For comparison, their analogues obtained by thermal synthesis have also been studied. The phase composition and structural properties of the obtained materials have been investigated by means of X-ray diffraction, Mössbauer spectroscopy, infrared spectroscopy, temperature-programmed reduction and magnetization measurements. X-ray diffraction shows that after 1 h of mechanical treatment ferrites are formed. The measurement techniques employed indicate that longer milling induces an increase in crystal size while crystal defects decrease with treatment time. Magnetization and reduction properties are affected by the particles size, the iron/cobalt ratio and the synthesis conditions.

Item Type:Article
Additional Information:Thanks to Elsevier editor. The definitive version is available at http://www.sciencedirect.com The original PDF of the article can be found at Journal of Alloys and Compounds website : http://www.sciencedirect.com/science/journal/09258388
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution:Other partners > Bulgarian Academy of Sciences (BULGARIA)
French research institutions > Centre National de la Recherche Scientifique - CNRS
Université de Toulouse > Institut National Polytechnique de Toulouse - INPT
Université de Toulouse > Université Paul Sabatier-Toulouse III - UPS
Other partners > Université Paris-Sud 11 (FRANCE)
Laboratory name:
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Deposited By: Nihad Lahdifi
Deposited On:30 Jun 2010 08:17

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