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The influence of the chemical treatment on the ferromagnetic behavior of carbon nanotubes synthesized using ferromagnetic catalyst

M. STANCU1,* , G. RUXANDA1, N. STANICA2, A. DINESCU3, L. NISTOR4, D. CIUPARU1

Affiliation

  1. Petroleum-Gas University of Ploiesti, 39 Bucuresti Blv., 100680, Ploiesti, Romania
  2. Institute of Physical Chemistry "Ilie Murgulescu", Bucharest, Romania
  3. National Institute for Research and Development in Microtechnologies, Bucharest, Romania
  4. National Institute for Material Physics, Magurele, Bucharest 077125, Romania

Abstract

In this contribution we report results of our investigations on the ferromagnetic behavior of pristine and chemically treated carbon nanotubes, synthesized by AC arc discharge method using iron powder as catalyst. The magnetic properties of the carbon nanotubes samples before and after chemical treatment were measured at room temperature in a vibrating - sample magnetometer. We observed significant changes of the ferromagnetic behavior of carbon nanotubes after the purification and concluded that the magnetic properties of carbon nanotubes synthesized using ferromagnetic catalyst are governed by the ferromagnetic catalyst nanoparticles attached to their walls during synthesis..

Keywords

Carbon nanotubes, Magnetic behavior, Arc discharge, Vibrating sample magnetometer.

Citation

M. STANCU, G. RUXANDA, N. STANICA, A. DINESCU, L. NISTOR, D. CIUPARU, The influence of the chemical treatment on the ferromagnetic behavior of carbon nanotubes synthesized using ferromagnetic catalyst, Optoelectronics and Advanced Materials - Rapid Communications, 6, 7-8, July-August 2012, pp.723-726 (2012).

Submitted at: April 12, 2012

Accepted at: July 19, 2012