Synthesis, structure and electromagnetic properties of FeCoCu/C nanocomposites

FeCoCu ternary nanoparticles distributed and stabilized in the carbon matrix of FeCoCu/C metal-carbon nanocompos-ites have been synthesized using controlled IR pyrolysis of precursors consisting of the “polymer / iron acetylacetate / cobalt and copper acetates” type system obtained by joint dissolut...

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Hoofdauteurs:	Tarala, V. A., Тарала, В. А.
Formaat:	Статья
Taal:	English
Gepubliceerd in:	2023
Onderwerpen:	FeCoCu nanoparticles Loss tangent Metal-carbon nanocomposites Raman spectroscopy Reflection loss Relative permittivity and permeability
Online toegang:	https://dspace.ncfu.ru/handle/20.500.12258/25477
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id	ir-20.500.12258-25477
record_format	dspace
spelling	ir-20.500.12258-254772023-09-15T12:18:07Z Synthesis, structure and electromagnetic properties of FeCoCu/C nanocomposites Tarala, V. A. Тарала, В. А. FeCoCu nanoparticles Loss tangent Metal-carbon nanocomposites Raman spectroscopy Reflection loss Relative permittivity and permeability FeCoCu ternary nanoparticles distributed and stabilized in the carbon matrix of FeCoCu/C metal-carbon nanocompos-ites have been synthesized using controlled IR pyrolysis of precursors consisting of the “polymer / iron acetylacetate / cobalt and copper acetates” type system obtained by joint dissolution of components followed by solvent removal. The effect of the synthesis temperature on the structure, composition and electromagnetic properties of the nanocom-posites has been studied. By XRD was shown that the formation of the FeCoCu ternary nanoparticles occurs due to the interaction of Fe3С with the nanoparticles of the CoCu solid solution. An increase in the synthesis temperature leads to an increase in the size of the metal nanoparticles due to their agglomeration and coalescence as a result of matrix reconstruction. Furthermore, ternary alloy nanoparticles having a variable composition may form depending on the synthesis temperature and the content ratio of the metals. Raman spectroscopy has shown that the crystallinity of the carbon matrix of the nanocomposites increases with the synthesis temperature. The frequency responses of the relative permittivity and permeability of the nanocomposites have been studied at 3–13 GHz. It has been shown that a change in the content ratio of the metals noticeably increases both the dielectric and the magnetic losses. The former loss is caused by the formation of a complex nanostructure of the nanocomposite carbon matrix while the latter one originates from an increase in the size of the nanoparticles and a shift of the natural ferromagnetic resonance frequency to the low-frequency region. The reflection loss has been calculated using a standard method from the experimental data on the frequency responses of the relative permittivity and permeability. It has been shown that the frequency range and the absorption of electromagnetic waves (from –20 to –52 dB) can be controlled by varying the content ratio of the metals in the precursor. The nanocomposites obtained as a result of the experiment deliver better results in comparison with FeCo/C nanocomposites synthesized under similar conditions. 2023-09-15T12:13:41Z 2023-09-15T12:13:41Z 2023 Статья Muratov, D.G., Kozhitov, L.V., Zaporotskova, I.V., Popkova, A.V., Tarala, V.A., Korovin, E.Yu., Zorin, A.V. Synthesis, structure and electromagnetic properties of FeCoCu/C nanocomposites // Modern Electronic Materials. - 2023. - 9 (1), pp. 15-24. - DOI: 10.3897/j.moem.9.1.104721 http://hdl.handle.net/20.500.12258/25477 en Modern Electronic Materials application/pdf
institution	СКФУ
collection	Репозиторий
language	English
topic	FeCoCu nanoparticles Loss tangent Metal-carbon nanocomposites Raman spectroscopy Reflection loss Relative permittivity and permeability
spellingShingle	FeCoCu nanoparticles Loss tangent Metal-carbon nanocomposites Raman spectroscopy Reflection loss Relative permittivity and permeability Tarala, V. A. Тарала, В. А. Synthesis, structure and electromagnetic properties of FeCoCu/C nanocomposites
description	FeCoCu ternary nanoparticles distributed and stabilized in the carbon matrix of FeCoCu/C metal-carbon nanocompos-ites have been synthesized using controlled IR pyrolysis of precursors consisting of the “polymer / iron acetylacetate / cobalt and copper acetates” type system obtained by joint dissolution of components followed by solvent removal. The effect of the synthesis temperature on the structure, composition and electromagnetic properties of the nanocom-posites has been studied. By XRD was shown that the formation of the FeCoCu ternary nanoparticles occurs due to the interaction of Fe3С with the nanoparticles of the CoCu solid solution. An increase in the synthesis temperature leads to an increase in the size of the metal nanoparticles due to their agglomeration and coalescence as a result of matrix reconstruction. Furthermore, ternary alloy nanoparticles having a variable composition may form depending on the synthesis temperature and the content ratio of the metals. Raman spectroscopy has shown that the crystallinity of the carbon matrix of the nanocomposites increases with the synthesis temperature. The frequency responses of the relative permittivity and permeability of the nanocomposites have been studied at 3–13 GHz. It has been shown that a change in the content ratio of the metals noticeably increases both the dielectric and the magnetic losses. The former loss is caused by the formation of a complex nanostructure of the nanocomposite carbon matrix while the latter one originates from an increase in the size of the nanoparticles and a shift of the natural ferromagnetic resonance frequency to the low-frequency region. The reflection loss has been calculated using a standard method from the experimental data on the frequency responses of the relative permittivity and permeability. It has been shown that the frequency range and the absorption of electromagnetic waves (from –20 to –52 dB) can be controlled by varying the content ratio of the metals in the precursor. The nanocomposites obtained as a result of the experiment deliver better results in comparison with FeCo/C nanocomposites synthesized under similar conditions.
format	Статья
author	Tarala, V. A. Тарала, В. А.
author_facet	Tarala, V. A. Тарала, В. А.
author_sort	Tarala, V. A.
title	Synthesis, structure and electromagnetic properties of FeCoCu/C nanocomposites
title_short	Synthesis, structure and electromagnetic properties of FeCoCu/C nanocomposites
title_full	Synthesis, structure and electromagnetic properties of FeCoCu/C nanocomposites
title_fullStr	Synthesis, structure and electromagnetic properties of FeCoCu/C nanocomposites
title_full_unstemmed	Synthesis, structure and electromagnetic properties of FeCoCu/C nanocomposites
title_sort	synthesis, structure and electromagnetic properties of fecocu/c nanocomposites
publishDate	2023
url	https://dspace.ncfu.ru/handle/20.500.12258/25477
work_keys_str_mv	AT taralava synthesisstructureandelectromagneticpropertiesoffecocucnanocomposites AT taralava synthesisstructureandelectromagneticpropertiesoffecocucnanocomposites
_version_	1809808836763058176

Synthesis, structure and electromagnetic properties of FeCoCu/C nanocomposites

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