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Towards spintronics: superparamagnetism of nanoparticles in carbon nanotubes

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3 Author(s)
Konchits, A.A. ; Inst. of Semicond. Phys., Nat. Acad. of Sci. of Ukraine, Kyiv, Ukraine ; Motsnyi, F.V. ; Terranova, M.-L.

For the first time the anomaly temperature dependence of the anisotropy field HA in carbon single-walled nanotubes (SWNTs) with magnetic nanoclusters was observed. It is shown that the reason of this phenomenon can be caused by a competition between dipolar interaction and anisotropy. It is found that the assembly of Ni nanoparticles shows the crossover to a collective magnetic ordering both initial and diluted SWNTs at the temperatures smaller than about 50 K.

Published in:
Advanced Optoelectronics and Lasers, 2005. Proceedings of CAOL 2005. Second International Conference on  (Volume:2 )

Date of Conference: 12-17 Sept. 2005

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