SAXS study of chain-like structures formed by magnetic nanoparticles
SAXS study of chain-like structures formed by magnetic nanoparticles
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DOI：
10.1016/j.msec.2006.09.002
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发表时间：
2007-09-01
期刊：
影响因子：
--
通讯作者：
Baglioni, Piero
中科院分区：
文献类型：
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作者：
Bonini, Massimo;Fratini, Emillano;Baglioni, Piero
Nanoparticles consisting of a magnetic core (gamma-Fe2O3) and an organic shell were prepared by thermal decomposition of an iron carbonyl complex in the presence of oleic acid. The nanoparticles were then dispersed in cyclohexane to form a stable ferrofluid. These dispersions were investigated by means of Small Angle Scattering of X-rays (SAXS) and the data were interpreted according to a "pearl necklace" model, opportunely modified to account for the core-shell structure of the magnetic nanoparticles. The results of the fittings show that nearly monodisperse spherical particles with a radius of the magnetic core of about 3.9 nm and a shell of about 2 nm were obtained. These nanoparticles self-assemble in chain-like structures, even in the absence of an applied magnetic field. (c) 2006 Elsevier B.V. All fights reserved.
