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Decoration of silicon carbide nanotubes by CoFe2O4 Spinel nanoparticles.

Published online by Cambridge University Press:  18 March 2011

Claude Estournès ,
Cuong Pham-Huu ,
Nicolas Keller  and
Marc J. Ledoux
Claude Estournès
Affiliation:
Groupe des Matériaux Inorganiques Institut de Physique et Chimie des Matériaux de Strasbourg UMR7504 CNRS-ULP-ECPM 23 rue du Loess 67037 Strasbourg Cedex, France
Cuong Pham-Huu
Affiliation:
Laboratoire de Chimie des Matériaux Catalytiques, ECPM, GMI, CNRS, Université Louis Pasteur, 25 rue Becquerel, 67087 Strasbourg Cedex 2, France
Nicolas Keller
Affiliation:
Laboratoire de Chimie des Matériaux Catalytiques, ECPM, GMI, CNRS, Université Louis Pasteur, 25 rue Becquerel, 67087 Strasbourg Cedex 2, France
Marc J. Ledoux
Affiliation:
Laboratoire de Chimie des Matériaux Catalytiques, ECPM, GMI, CNRS, Université Louis Pasteur, 25 rue Becquerel, 67087 Strasbourg Cedex 2, France
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Abstract

Silicon carbide nanotubes have been prepared and decorated with CoFe2O4 spinel. These nanocomposites were prepared by incipient wetness impregnation of the dried SiC support with a stoichiometric aqueous solution of the cobalt and iron nitrates. After drying, subsequent annealing treatments were performed under air in the temperature range 873 to 1073 K. X-ray diffraction and high resolution transmission electron microscopy reveal the presence of spinel nanoparticles at the surface of the tubes. Magnetic properties of the nanocomposites show in the magnetic field explored (up to 5 T) that saturation magnetization is not observed neither at room temperature nor at 5Kelvin. The nanometric character and the nature of the spinel particles are also confirmed by the coercive field (1.6 T) observed at low temperature and the curie temperature.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 658: Symposium GG – Solid-State Chemistry of Inorganic Materials III , 2000 , GG6.4
Copyright
Copyright © Materials Research Society 2001

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References

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