Journal of Research on Many-body Systems

Journal of Research on Many-body Systems

Synthesis and study of the structural and electromagnetic properties of iron-carbon core-shell nanoparticles

Document Type : Full length research Paper

Author
Abstract
In this paper, carbon coated iron particles were synthesized by a DC arc-discharge method using a semi-automatic homemade reactor. The produced particles were studied using X-Ray diffraction, field-emission scanning electron microscope (FESEM) and transmission electron microscope (TEM). The production mechanism for core-shell particles in arc-discharge process was investigated. In production process and inside the created plasma, between anode and cathode, Fe-C particles are formed in a carbon-rich atmosphere. The carbon content of the iron alloy in liquid phase is more than the solid solubility. So, by decreasing cathode temperature, the excess carbon is ejected from the alloy and forms a carbon layer around the iron particles. The static and dynamic magnetic properties, in 1-18 GHz frequency range, were investigated and radar absorbing properties of the core-shell particles was studied.
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  • Receive Date 21 August 2014
  • Revise Date 14 March 2015
  • Accept Date 16 March 2015