Synthesis, structure and electromagnetic properties of FeCoAl/C nanocomposites

Magnetic nanoparticles play an important role in rapidly developing advanced branches of science and industry, e.g. fabrication of magnetic storage media, synthesis of ferromagnetic liquids, medicine and chemistry. One problem faced in the usage of magnetic nanoparticles is their high chemical activ...

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Autores principales:	Dmitriy G. Muratov, Lev V. Kozhitov, Egor V. Yakushko, Andrey A. Vasilev, Alena V. Popkova, Vitaly A. Tarala, Evgeniy Yu. Korovin
Formato:	article
Lenguaje:	EN
Publicado:	Pensoft Publishers 2021
Materias:	Electronics TK7800-8360
Acceso en línea:	https://doaj.org/article/514167d5d56b42d68ca69d05aa87a6d1
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spelling	oai:doaj.org-article:514167d5d56b42d68ca69d05aa87a6d12021-12-03T04:30:35ZSynthesis, structure and electromagnetic properties of FeCoAl/C nanocomposites10.3897/j.moem.7.3.771052452-1779https://doaj.org/article/514167d5d56b42d68ca69d05aa87a6d12021-09-01T00:00:00Zhttps://moem.pensoft.net/article/77105/download/pdf/https://moem.pensoft.net/article/77105/download/xml/https://moem.pensoft.net/article/77105/https://doaj.org/toc/2452-1779Magnetic nanoparticles play an important role in rapidly developing advanced branches of science and industry, e.g. fabrication of magnetic storage media, synthesis of ferromagnetic liquids, medicine and chemistry. One problem faced in the usage of magnetic nanoparticles is their high chemical activity leading to oxidation in air and agglomeration. The chemical activity of magnetic nanoparticles stems from the contribution of their large specific surface to volume ratio. Carbon coating of nanoparticles reduces the interaction between nanoparticles. FeCoAl/C metal-carbon nanocomposites have been synthesized using IR pyrolysis of polymer/metal salt precursors. The effect of synthesis temperature (IR heating) in the range from 500 to 700 °C on the structure and composition of the nanomaterials has been studied. We show that the forming particles are the FeCoAl ternary solid solution with a FeCo based bcc lattice. An increase in the synthesis temperature from 500 to 700 °C leads to an increase in the coherent scattering region of three-component nanoparticles from 5 to 19 nm. An increase in the aluminum content from 20 to 30% relative to Fe and Co results in an increase in the size of the nanoparticles to 15 nm but this also entails the formation of a Co based solid solution having an fcc lattice. An increase in the nanocomposite synthesis temperature and a growth of the relative Al content as a result of a more complete carbonization and the structure-building effect of metals reduce the degree of amorphousness of the nanocomposite carbon matrix and lead to the formation of graphite-like phase crystallites having an ordered structure. The effect of synthesis temperature and relative content of metals on the electromagnetic properties (complex permittivity and permeability) of the synthesized nanocomposites has been studied. Synthesis conditions affect the radio absorption properties of the nanocomposites, e.g. reflection loss (RL) in the 3–13 GHz range.Dmitriy G. MuratovLev V. KozhitovEgor V. YakushkoAndrey A. VasilevAlena V. PopkovaVitaly A. TaralaEvgeniy Yu. KorovinPensoft PublishersarticleElectronicsTK7800-8360ENModern Electronic Materials, Vol 7, Iss 3, Pp 99-108 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Electronics TK7800-8360
spellingShingle	Electronics TK7800-8360 Dmitriy G. Muratov Lev V. Kozhitov Egor V. Yakushko Andrey A. Vasilev Alena V. Popkova Vitaly A. Tarala Evgeniy Yu. Korovin Synthesis, structure and electromagnetic properties of FeCoAl/C nanocomposites
description	Magnetic nanoparticles play an important role in rapidly developing advanced branches of science and industry, e.g. fabrication of magnetic storage media, synthesis of ferromagnetic liquids, medicine and chemistry. One problem faced in the usage of magnetic nanoparticles is their high chemical activity leading to oxidation in air and agglomeration. The chemical activity of magnetic nanoparticles stems from the contribution of their large specific surface to volume ratio. Carbon coating of nanoparticles reduces the interaction between nanoparticles. FeCoAl/C metal-carbon nanocomposites have been synthesized using IR pyrolysis of polymer/metal salt precursors. The effect of synthesis temperature (IR heating) in the range from 500 to 700 °C on the structure and composition of the nanomaterials has been studied. We show that the forming particles are the FeCoAl ternary solid solution with a FeCo based bcc lattice. An increase in the synthesis temperature from 500 to 700 °C leads to an increase in the coherent scattering region of three-component nanoparticles from 5 to 19 nm. An increase in the aluminum content from 20 to 30% relative to Fe and Co results in an increase in the size of the nanoparticles to 15 nm but this also entails the formation of a Co based solid solution having an fcc lattice. An increase in the nanocomposite synthesis temperature and a growth of the relative Al content as a result of a more complete carbonization and the structure-building effect of metals reduce the degree of amorphousness of the nanocomposite carbon matrix and lead to the formation of graphite-like phase crystallites having an ordered structure. The effect of synthesis temperature and relative content of metals on the electromagnetic properties (complex permittivity and permeability) of the synthesized nanocomposites has been studied. Synthesis conditions affect the radio absorption properties of the nanocomposites, e.g. reflection loss (RL) in the 3–13 GHz range.
format	article
author	Dmitriy G. Muratov Lev V. Kozhitov Egor V. Yakushko Andrey A. Vasilev Alena V. Popkova Vitaly A. Tarala Evgeniy Yu. Korovin
author_facet	Dmitriy G. Muratov Lev V. Kozhitov Egor V. Yakushko Andrey A. Vasilev Alena V. Popkova Vitaly A. Tarala Evgeniy Yu. Korovin
author_sort	Dmitriy G. Muratov
title	Synthesis, structure and electromagnetic properties of FeCoAl/C nanocomposites
title_short	Synthesis, structure and electromagnetic properties of FeCoAl/C nanocomposites
title_full	Synthesis, structure and electromagnetic properties of FeCoAl/C nanocomposites
title_fullStr	Synthesis, structure and electromagnetic properties of FeCoAl/C nanocomposites
title_full_unstemmed	Synthesis, structure and electromagnetic properties of FeCoAl/C nanocomposites
title_sort	synthesis, structure and electromagnetic properties of fecoal/c nanocomposites
publisher	Pensoft Publishers
publishDate	2021
url	https://doaj.org/article/514167d5d56b42d68ca69d05aa87a6d1
work_keys_str_mv	AT dmitriygmuratov synthesisstructureandelectromagneticpropertiesoffecoalcnanocomposites AT levvkozhitov synthesisstructureandelectromagneticpropertiesoffecoalcnanocomposites AT egorvyakushko synthesisstructureandelectromagneticpropertiesoffecoalcnanocomposites AT andreyavasilev synthesisstructureandelectromagneticpropertiesoffecoalcnanocomposites AT alenavpopkova synthesisstructureandelectromagneticpropertiesoffecoalcnanocomposites AT vitalyatarala synthesisstructureandelectromagneticpropertiesoffecoalcnanocomposites AT evgeniyyukorovin synthesisstructureandelectromagneticpropertiesoffecoalcnanocomposites
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Synthesis, structure and electromagnetic properties of FeCoAl/C nanocomposites

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