Synthesis Of Ni Filled Multiwalled Carbon Nanotubes And Study Of Magnetic Behaviour

Reetu Kumari, Anshika Singh, Rajesh Kumar, Lucky Krishnia, Vinay Kumar, Nitin K. Puri, Pawan K. Tyagi*

Department of Applied Physics, Delhi Technological University, Delhi 110042, India

Adv. Mater. Lett., 2016, 7 (3), pp 197-200

DOI: 10.5185/amlett.2016.6150

Publication Date (Web): Feb 01, 2016

E-mail: pawan.phy@dce.edu

Abstract


In this report, we have illustrated the synthesis of the Ni-filled multiwalled carbon nanotubes (MWCNTs) on both metallic and non-metallic substrates, by using thermal CVD technique. Scanning Electron Microscopy (SEM) and X-ray diffraction (XRD) have been used to characterize the surface morphology and crystalline nature of the MWCNTs encapsulated with Ni nanorod. These filled MWCNTs have exhibited strong magnetic response due to encapsulation of pure phase of Ni. Magnetic Force Microscopy (MFM) study of such filled tubes reveals the pole formation in the Ni nanorod and confirms magnetization direction perpendicular to tube axis. Filling occurs in a fragmented manner confirmed by MFM and each fragment found to have north and south poles along the axis perpendicular to the tube i.e. radial direction of tube. 

Keywords

Carbon nanotubes, thermal CVD, magnetic force microscopy (MFM), magnetization direction.

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