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Thermal Plasma Synthesis of Magnetic Nanoparticles



J H. Scott, S. A. Majetich, Z Turgut, M E. McHenry, K Chowdary, M I. Boulos


A scalable synthesis route for the production of bare and carbon-coated metal nanoparticles is presented. Magnetic nanoparticles composed of pure Fe, pure Co, and FeCo alloys ranging from Fe50Co50 to Fe75Co25 are produced using a radio frequency (RF) plasma torch. By injecting acetylene into the plasma, the nanoparticles can optionally be encapsulated in a protective coating of carbon to improve their oxidation resistance. Using transmission electron microscopy, x-ray diffraction, and x-ray microanalysis to characterize the nanoparticle powder, a comparison of mixed elemental precursors and pre-alloyed precursors indicates that the starting material homogeneity can affect the variation in composition of the product nanoparticles.
Journal of Materials Research


Fe-Co alloy, nanoparticles, SEM, TEM, thermal plasma synthesis, x-ray diffraction, x-ray microanalysis


Scott, J. , Majetich, S. , Turgut, Z. , McHenry, M. , Chowdary, K. and Boulos, M. (2008), Thermal Plasma Synthesis of Magnetic Nanoparticles, Journal of Materials Research (Accessed February 24, 2024)
Created October 16, 2008