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Dia-Magnetic to Ferro-Magnetic Behavioral Change of Fe-Catalysts Based Nitrogenated Carbon Nanotubes (NCNTs) by the Process of Chlorination/Oxidation

Biomedical Sciences Research Institute Computer Science Research Institute Environmental Sciences Research Institute Nanotechnology & Advanced Materials Research Institute

Ray, SC, Sahu, DR and Papakonstantinou, P (2011) Dia-Magnetic to Ferro-Magnetic Behavioral Change of Fe-Catalysts Based Nitrogenated Carbon Nanotubes (NCNTs) by the Process of Chlorination/Oxidation. Journal of Nanoscience and Nanotechnology, 11 . pp. 8269-8273. [Journal article]

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URL: http://www.ingentaconnect.com/content/asp/jnn/2011/00000011/00000009/art00112?token=00471e659fca9979ed028d7e442f2067217d7646705c496e467b7372687630505dd4cd7

DOI: http://dx.doi.org/10.1166/jnn.2011.5061

Abstract

In this work, we have synthesized multiwall nitrogenated carbon nanotubes (MW-NCNTs) with Fe catalysts by the microwave plasma-enhanced chemical vapor deposition process@950 C and subsequently functionalized with chlorine and oxygen. The dia-magnetic behavioral M-H loop of non-functionalized MW-NCNTs were turn into ferromagnetic behaviors by the process of chlorination and oxidation respectively; which were characterized by means of superconducting quantum interference device magnetometer within the temperature range 5–300 K. A prominent cusp like behavior is also observed at around ≈45 K in MFC and MZFC measurements confirming the ferromagnetic behaviors of these MW-NCNTs after chlorination and oxidation.

Item Type:Journal article
Faculties and Schools:Faculty of Computing & Engineering
Faculty of Computing & Engineering > School of Engineering
Research Institutes and Groups:Engineering Research Institute
Engineering Research Institute > Nanotechnology & Integrated BioEngineering Centre (NIBEC)
ID Code:21892
Deposited By:Professor Pagona Papakonstantinou
Deposited On:24 Apr 2012 10:30
Last Modified:24 Apr 2012 10:30

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