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Magnetic structure of Fe-Fe oxide nanoparticles made by electrodeposition


Santosh Kumar
Samar Layek
Brajesh Pandey
HC Verma

Abstract

Iron/iron-oxide nano particles are synthesized using electrodeposition technique. The particles are well crystalline bcc iron with disordered oxides of iron on the surface. The particles show very small coercivity displaying superparamagnetic behavior of the iron core in magnetization measurement using Vibrating Sample Magnetometer. But the same particles show no trace of supermagnetism or fluctuation of magnetic moments in Mössbauer measurements, showing the role of time scales of measuring equipment in fine particle magnetism.

Keywords: Iron/iron oxide composite, Magnetic nanoparticles, VSM, Mössbauer spectroscopy

International Journal of Engineering, Science and Technology, Vol. 2, No. 8, 2010, pp. 66-72
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eISSN: 2141-2839
print ISSN: 2141-2820