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Published on: February 2, 2012
Ferromagnetic behaviour of nickel contacted multiwalled carbon nanotubes
E Titus1, M K Singh, Gil Cabral
1Centre for Mechanical Technology and Automation, University of Aveiro, 3810-193, Portugal.
Abstract:
A novel method for the contact of ferromagnetic nano-nickel onto multiwalled carbon nanotubes (MWCNTs) is proposed in this work. The process involves the decomposition of the precursor: nickel carbonyl-Ni(CO)4 into nickel and CO by laser chemical vapour deposition at 150-200 degrees C and the deposition of nano-nickel onto MWCNTs. Field emission scanning electron microscopy (FE-SEM), transmission electron microscopy (TEM), HR (High resolution) TEM, and Raman spectroscopy were employed for the detailed analysis of the nickel contacted MWCNTs. The ferro-magnetic nature of the sample was confirmed by Super-conducting Quantum Interference Device (SQUID) analysis.
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