Carbon-encapsulated Magnetic Nanoparticles Spontaneously Formed by Thermolysis Route
Titel:
Carbon-encapsulated Magnetic Nanoparticles Spontaneously Formed by Thermolysis Route
Auteur:
Bystrzejewski, M. Huczko, A. Lange, H. Baranowski, P. Kaszuwara, W. Cudziło, S. Kowalska, E. Rummeli, M. H. Gemming, T.
Verschenen in:
Fullerenes, nanotubes & carbon nanostructures
Paginering:
Jaargang 16 (2008) nr. 4 pagina's 217-230
Jaar:
2008-07
Inhoud:
A new method for producing carbon-encapsulated magnetic nanoparticles using a thermolysis route is developed. The method is based on dechlorination of C6Cl6 with NaN3 in the presence of Fe or Fe14Nd2B magnetic alloy. The as-obtained products contained carbon-encapsulated magnetic nanoparticles with the diameters between 20 and 60 nm. The products were purified and their composition and morphology were studied by means of SEM, TEM, XRD and TG-DTA. The carbon-encapsulated nanoparticles are superparamagnetic with the maximum saturation magnetization of 20 emu/g. This autothermal process has inherent advantages, including the use of low cost materials and the simplicity of the production protocol.