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Synthesis and characterization of Co and Ni magnetic nanoparticles

H. CHIRIAC1,* , A. E. MOGA1, C. GHERASIM1

Affiliation

  1. National Institute of R & D for Technical Physics, 47 Mangeron Blvd., 700050 Iasi, Romania

Abstract

This paper reports some results on the synthesis and magnetic properties of cobalt and nickel nanoparticles. Cobalt and nickel nanoparticles have been synthesised by polyol method and the obtained magnetic nanoparticles have a superparamagnetic behaviour. The morphology and size of the nanoparticles were studied by scanning electron microscopy (SEM) and dynamic light scattering (DLS). The micrographs reveal that the nanoparticles are mostly spherical. The size of Co nanoparticles ranges between 30 – 340 nm and size of Ni nanoparticles ranges between 90 – 400 nm. Magnetic characteristics of the obtained nanoparticles were determined at room temperature by using a vibrating sample magnetometer (VSM), in an external magnetic field of 600 kA/m..

Keywords

Cobalt nanoparticles, Nickel nanoparticles, Polyol process, Superparamagnetic behaviour.

Submitted at: Sept. 25, 2007
Accepted at: March 17, 2008

Citation

H. CHIRIAC, A. E. MOGA, C. GHERASIM, Synthesis and characterization of Co and Ni magnetic nanoparticles, Journal of Optoelectronics and Advanced Materials Vol. 10, Iss. 3, pp. 654-658 (2008)