Electrophysical and Magnetic Properties of Arrays of Fibrous Iron-Containing Carbon Nanocomposites
O. M. Sedov$^{1}$, V. V. Holod$^{1}$, S. M. Makhno$^{2}$, O. M. Lisova$^{2}$, M. V. Abramov$^{2}$, S. P. Turanska$^{2}$, P. P. Gorbyk$^{2,3}$
$^{1}$Limited Liability Company ‘Fronteria Ukraine’, 15 Tsymlyanska Str., UA-69008 Zaporizhzhya, Ukraine
$^{2}$O. O. Chuiko Institute of Surface Chemistry, NAS of Ukraine, 17 General Naumov Str., UA-03164 Kyiv, Ukraine
$^{3}$National Technical University of Ukraine ‘Igor Sikorsky Kyiv Polytechnic Institute’, 37 Peremohy Ave., UA-03056 Kyiv, Ukraine
Received: 10.04.2019. Download: PDF
The composition, electrophysical and magnetic properties of arrays of iron-containing fibrous carbon nanocomposites (IFCNCs), synthesized using the methods of gas-phase pyrolytic decomposition of acetylene and thermal catalytic carbon deposition in the presence of a catalyst-forming iron-containing concentrate, are studied. In composition of IFCNCs, the carbon nanofibers and multiwall carbon nanotubes (with outer diameter of 10–100 nm, length of 100–1000 nm) are found out, as well as the nanocrystalline phases of magnetite, silica, graphite, iron carbide, with their average size, calculated by the Scherrer formula, of 33, 52, 15, 29 nm, respectively. As shown, the synthesized IFCNC samples are active in the processes of absorption and reflection of electromagnetic waves in the microwave range of 1–80 GHz. The specific magnetization of saturation and the coercive force depend on the chemical composition of the samples, increasing with a growth of mass concentration of the iron-containing component. The investigated IFCNCs are characterized by thermal stability under heating in air up to 300°C. The results of elemental composition, basic structural, electrophysical, magnetic characteristics, and thermal stability investigations of IFCNCs indicate their perspective for production and technical, environmental and technological applications.
Key words: iron-containing carbon nanocomposites, carbon nanofibers, multiwall carbon nanotubes, nanoparticles, electrophysical and magnetic properties.
URL: http://mfint.imp.kiev.ua/en/abstract/v41/i09/1153.html
DOI: https://doi.org/10.15407/mfint.41.09.1153
PACS: 61.46.Df, 61.46.Km, 61.48.De, 65.80.-g, 73.63.Fg, 75.20.-g
Citation: O. M. Sedov, V. V. Holod, S. M. Makhno, O. M. Lisova, M. V. Abramov, S. P. Turanska, and P. P. Gorbyk, Electrophysical and Magnetic Properties of Arrays of Fibrous Iron-Containing Carbon Nanocomposites, Metallofiz. Noveishie Tekhnol., 41, No. 9: 1153—1169 (2019) (in Ukrainian)