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Microwave flash-synthesis of iron oxides nanoparticles*

Published online by Cambridge University Press:  15 July 1999

P. Rigneau ,
K. Bellon ,
I. Zahreddine  and
D. Stuerga
P. Rigneau
Affiliation:
Groupe d'Études et de Recherches sur les Microondes (GERM), Laboratoire de Recherches sur la Réactivité des Solides (UMR 5613 du CNRS), Université de Bourgogne, 9 avenue Alain Savary, B.P. 47870, 21078 Dijon Cedex, France
K. Bellon
Affiliation:
Groupe d'Études et de Recherches sur les Microondes (GERM), Laboratoire de Recherches sur la Réactivité des Solides (UMR 5613 du CNRS), Université de Bourgogne, 9 avenue Alain Savary, B.P. 47870, 21078 Dijon Cedex, France
I. Zahreddine
Affiliation:
Groupe d'Études et de Recherches sur les Microondes (GERM), Laboratoire de Recherches sur la Réactivité des Solides (UMR 5613 du CNRS), Université de Bourgogne, 9 avenue Alain Savary, B.P. 47870, 21078 Dijon Cedex, France
D. Stuerga*
Affiliation:
Groupe d'Études et de Recherches sur les Microondes (GERM), Laboratoire de Recherches sur la Réactivité des Solides (UMR 5613 du CNRS), Université de Bourgogne, 9 avenue Alain Savary, B.P. 47870, 21078 Dijon Cedex, France
*
stuerga@u-bourgogne.fr
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Abstract

Hematite particles have been synthesized by a one step thermohydrolysis of nitrate iron (III) solutions. The microwave system (RAMO system) designed by the authors is able to induce very fast heating rates within an autoclave. These operating conditions induce precipitation reactions in the entire volume of the reactor. These precipitation conditions lead to instantaneous nucleation of monodisperse particles (separation of the nucleation and growth events). These results indicate that it should be possible to produce very well-crystallized hematite particles which can be used as precursors for production of magnetite or maghemite.

Keywords

Type
Research Article
Information
The European Physical Journal - Applied Physics , Volume 7 , Issue 1 , July 1999 , pp. 41 - 43
Copyright
© EDP Sciences, 1999

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Footnotes

*

This paper was presented at "Journées Oxydes Magnétiques" held at Dijon the March 24-26, 1998.

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