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Mössbauer and magnetization studies of iron oxide nanocrystals
Stockholm University, Faculty of Science, Department of Physical, Inorganic and Structural Chemistry.
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2008 (English)In: Hyperfine Interactions, ISSN 0304-3843, E-ISSN 1572-9540, Vol. 189, 49-53 p.Article in journal (Refereed) Published
Abstract [en]

Monodisperse iron oxide nanocrystals have been produced following nonhydrolytic, thermal decomposition routes. Spherically shaped particles with diameter of 4 and 12 nm and cubic shaped particles with an edge length of 9 nm have been studied. The particles have been shown to consist of mainly maghemite. A reduction of the saturation magnetic hyperfine field is observed for the 4 nm particles as compared to the corresponding bulk value. The anisotropy energy determined from the temperature variation of the magnetic hyperfine field was strongly enhanced for the 4 nm particles.

Place, publisher, year, edition, pages
Springer , 2008. Vol. 189, 49-53 p.
Keyword [en]
Maghemite nanoparticles · Anisotropy energy · Mössbauer
National Category
Chemical Sciences
URN: urn:nbn:se:su:diva-15438DOI: 10.1007/s10751-008-9750-5ISI: 000261061100008OAI: diva2:181958
Available from: 2008-12-02 Created: 2008-12-02 Last updated: 2010-12-07Bibliographically approved

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Bergström, Lennart
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Department of Physical, Inorganic and Structural Chemistry
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