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Journal of Nanomaterials
Volume 2010, Article ID 907686, 8 pages
Research Article

Simple Synthesis and Characterization of Cobalt Ferrite Nanoparticles by a Thermal Treatment Method

1Department of Physics, Putra University, Malaysia (UPM), 43400 Serdang, Selangor, Malaysia
2Department of Physics, Faculty of Science, Malayer University, Malayer, Iran
3Department of Chemistry, Putra University, Malaysia (UPM), 43400 Serdang, Selangor, Malaysia
4Advanced Materials and Nanotechnology Laboratory, Institute of Advanced Technology, Putra University, Malaysia (UPM), 43400 Serdang, Selangor, Malaysia

Received 4 July 2010; Revised 20 November 2010; Accepted 26 November 2010

Academic Editor: Michael Harris

Copyright © 2010 Mahmoud Goodarz Naseri et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


Crystalline, magnetic, cobalt ferrite nanoparticles were synthesized from an aqueous solution containing metal nitrates and polyvinyl pyrrolidone (PVP) as a capping agent by a thermal treatment followed by calcination at various temperatures from 673 to 923 K. The structural characteristics of the calcined samples were determined by X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR), and transmission electron microscopy (TEM). A completed crystallization occurred at 823 and 923 K, as shown by the absence of organic absorption bands in the FT-IR spectrum. Magnetization measurements were obtained at room temperature by using a vibrating sample magnetometer (VSM), which showed that the calcined samples exhibited typical magnetic behaviors.