The synthesis of spinel–ferrite nanoparticles using precipitation in microemulsions for ferrofluid applications

Magnetic maghemite nanoparticles with a narrow size distribution were prepared in water–CTAB–hexanol–butanol microemulsions. The particle size was controlled with the composition of the microemulsion (water-to-CTAB ratio) and the temperature during synthesis. The saturation magnetization of the nano...

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Bibliographic Details
Published in:Journal of magnetism and magnetic materials 2005-03, Vol.289, p.32-35
Main Authors: Makovec, Darko, Košak, Aljoša, Žnidaršič, Andrej, Drofenik, Miha
Format: Article
Language:English
Subjects:
Condensed matter: electronic structure, electrical, magnetic, and optical properties
Exact sciences and technology
Maghemite
Magnetic liquids
Magnetic properties and materials
Nanoparticles
Physics
Precipitation
Reverse microemulsion
Small particles and nanoscale materials
Studies of specific magnetic materials
Synthesis
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Summary:Magnetic maghemite nanoparticles with a narrow size distribution were prepared in water–CTAB–hexanol–butanol microemulsions. The particle size was controlled with the composition of the microemulsion (water-to-CTAB ratio) and the temperature during synthesis. The saturation magnetization of the nanoparticles depended mainly on their size, ranging from 22 emu/g for a particle size of 3.4 nm to 64 emu/g for a size of 15.3 nm.
ISSN:0304-8853
DOI:10.1016/j.jmmm.2004.11.010