Magnetic properties of ?-Fe2O3–SiO2 aerogel and xerogel nanocomposite materials

Cannas, C. and Casula, M.F. and Concas, G. and Corrias, A. and Gatteschi, D. and Falqui, A. and Musinu, A. and Sangregorio, C. and Spano, G. (2001) Magnetic properties of ?-Fe2O3–SiO2 aerogel and xerogel nanocomposite materials. Journal of Materials Chemistry, 11 (12). pp. 3180-3187. ISSN 0959-9428. (doi:https://doi.org/10.1039/b104562h) (The full text of this publication is not currently available from this repository. You may be able to access a copy if URLs are provided)

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Official URL
http://dx.doi.org/10.1039/b104562h

Abstract

The properties of aerogel and xerogel iron oxide-silica nanocomposites prepared by the sol-gel method were investigated by thermal analysis, X-ray diffraction, transmission electron microscopy, Mössbauer spectroscopy and susceptibility measurements. Pure maghemite nanoparticles were obtained starting from both xerogel and aerogel samples, with particles of average size around 5 nm which tend to aggregate into the silica matrix. The role of magnetic interparticle interactions, which have a strong influence on the magnetic properties, is discussed.

Item Type: Article
Uncontrolled keywords: iron oxide, silicon dioxide, article, magnetism, Mössbauer spectroscopy, nanoparticle, thermal analysis, transmission electron microscopy, X ray diffraction
Subjects: Q Science > QC Physics > QC176.8.N35 Nanoscience, nanotechnology
Divisions: Faculties > Sciences > School of Physical Sciences > Functional Materials Group
Depositing User: Anna Corrias
Date Deposited: 17 Dec 2014 12:37 UTC
Last Modified: 04 Dec 2017 12:45 UTC
Resource URI: https://kar.kent.ac.uk/id/eprint/46225 (The current URI for this page, for reference purposes)
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