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

SC Ray; DR Sahu; P Papakonstantinou

doi:10.1166/jnn.2011.5061

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

SC Ray, DR Sahu, P Papakonstantinou

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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.

Original language	English
Pages (from-to)	8269-8273
Journal	Journal of Nanoscience and Nanotechnology
Volume	11
DOIs	https://doi.org/10.1166/jnn.2011.5061
Publication status	Published (in print/issue) - 1 Sept 2011

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

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.",

author = "SC Ray and DR Sahu and P Papakonstantinou",

year = "2011",

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doi = "10.1166/jnn.2011.5061",

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T1 - Dia-Magnetic to Ferro-Magnetic Behavioral Change of Fe-Catalysts Based Nitrogenated Carbon Nanotubes (NCNTs) by the Process of Chlorination/Oxidation

AU - Ray, SC

AU - Sahu, DR

AU - Papakonstantinou, P

PY - 2011/9/1

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AB - 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.

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DO - 10.1166/jnn.2011.5061

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JO - Journal of Nanoscience and Nanotechnology

JF - Journal of Nanoscience and Nanotechnology

ER -

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

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