Synthesis and Investigation of (Fe-Fe3C) Core-Shell Magnetic Nanoparticles in Carbon Matrix

A. Manukyan, H. Gyulasaryan, E. Sharoyan, J. Gray, J.O. Bernal, A. Kocharian
California State University Los Angeles,
United States

Keywords: core-shell architecture, nanographite, phthalocyanine, solid-phase pyrolysis, magnetic hyperthermia


Synthesis and Investigation of (Fe-Fe3C) Core-Shell Magnetic Nanoparticles in Carbon Matrix A. Manukyan1, H. Gyulasaryan1, and E. Sharoyan2, J. Gray3, J. O. Bernal4, A. Kocharian4 1Institute for Physical Research, Laboratory of Solid State Physics, Ashtarak 0203, Armenia 2Russian-Armenian (Slavonic) University, Yerevan, Armenia 3Materials Characterization Lab, Pennsylvania State University, Materials Research Institute 4Physics Department, California State University, Los Angeles, CA 90032, USA The solid-phase pyrolysis of iron phthalocyanine synthesized Fe-Fe3C magnetic nanoparticles with a core-shell architecture (where the core is Fe, the shell is Fe3C) with an additional carbon shell. The Raman Electroscopy, X-ray diffraction, Raman spectroscopy, STEM-TEM images, EDX line-scan profiles and magnetometry measurements we applied to investigate the unique characteristics of these synthesized materials. The magnetic and magnetic resonance characteristics, as well as the asymmetric form of magnetic hysteresis, confirmed the presence of the core – shell architecture of the nanoparticles obtained. The specific absorption rate make these materials attractive for magnetic hyperthermia applications. This work was supported by a grant from the Russian-Armenian (Slavonic) University at the expense of the Ministry of Education and Science of the Russian Federation. The work at CSULA was supported by the National Science Foundation-Partnerships for Research and Education in Materials under Grant DMR-1523588.