The Formation and Study of the FeCo Nanoparticles Alloy in Structure of Metal-Carbon Nanocomposites FeCo/C

Authors L.V. Kozhitov1 , M.F. Bulatov2, V.V. Korovushkin1 , V.G. Kostishin1 , D.G. Muratov1,3, M.N. Shipko1,4, S.G. Emelyanov5, E.V. Yakushko1

1 National University of Science and Technology «MISiS», 4, Leninsky Pr., 119049 Moscow, Russia

2 JSC "State research and design Institute of rare-metal industry "Giredmet", 5-1, G. Tolmachevsky Lane, 119017 Moscow, Russia

3 A.V. Topchiev Institute of Petrochemical Synthesis, RAS, 29, Leninsky Pr., 119991 Moscow, Russia

4 Russian University of Economics named after G. V. Plekhanov, 117997 Moscow, Russia

5 South-West State University, 94, 50 let Oktyabrya St., 305040 Kursk, Russia;

Issue Volume 7, Year 2015, Number 4
Dates Received 02 November 2015; published online 24 December 2015
Citation L.V. Kozhitov, M.F. Bulatov, V.V. Korovushkin, et al., J. Nano- Electron. Phys. 7 No 4, 04103 (2015)
PACS Number(s) 76.80. + y, 81.05.Mh, 78.67.Bf
Keywords Mossbauer spectroscopy (3) , Metal-carbon nanocomposites (6) , FeCo Nanoparticles, XRF-analysis, IR-heating (3) .
Annotation The features the phase transitions and phase composition of the metal-carbon nanocomposites FeCo / C were studied by Mossbauer spectroscopy. Nanocomposites were synthesized in the temperature range of T = 300-800 °C. It was shown that the samples synthesized at T = 300 °C contains of superparamagnetic nanoparticles of magnetite and amorphous oxide of iron only. The process of forming nanoparticles of alloy FeCo occurs within the temperature range 500-600 ° C due to the recovery of amorphous iron oxide and magnetite as well as them dissolving in a phase of cobalt. The growth of size of nanoparticles of alloy by agglomeration and dissolution of iron in the alloy nanoparticles occurs only at the temperature range of synthesis 600-800 ° C. This is confirmed by a decrease of the content of Fe, which associated with carbon and it is consistent with the results of phase and structural studies, carried out in previous works.

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