mateltechИзвестия высших учебных заведений. Материалы электронной техникиIzvestiya Vysshikh Uchebnykh Zavedenii. Materialy Elektronnoi Tekhniki = Materials of Electronics Engineering1609-35772413-6387MISIS10.17073/1609-3577-2021-3-176-189mateltech-450Research ArticleНаноматериалы и нанотехнологииNANOMATERIALS AND NANOTECHNOLOGYСинтез, структура и электромагнитные свойства нанокомпозитов FeCoAl/CSynthesis, structure and electromagnetic properties of FeCoAl/C nanocompositeshttps://orcid.org/0000-0002-4471-0552МуратовД. Г.MuratovD. G.

Ленинский просп., д. 29, Москва, 119991,

Ленинский просп., д. 4, Москва, 119049

Муратов Дмитрий Геннадьевич — канд. техн. наук, ведущий научный сотрудник; доцент

29 Leninsky Ave., Moscow 119991,

4 Leninsky Ave., Moscow 119049

Dmitriy G. Muratov — Cand. Sci. (Eng.), Leading Researcher; Associate Professor

muratovdg@yandex.ruhttps://orcid.org/0000-0002-4973-1328КожитовЛ. В.KozhitovL. V.

Ленинский просп., д. 4, Москва, 119049

Кожитов Лев Васильевич — доктор техн. наук, профессор

4 Leninsky Ave., Moscow 119049

Lev V. Kozhitov — Dr. Sci. (Eng.), Professor

kozitov@rambler.ruhttps://orcid.org/0000-0002-6116-9665ЯкушкоЕ. В.YakushkoE. V.

Ленинский просп., д. 4, Москва, 119049

Якушко Егор Владимирович — канд. техн. наук, доцент, кафедра технологии материалов электроники

4 Leninsky Ave., Moscow 119049

Egor V. Yakushko — Cand. Sci. (Eng.), Associate Professor

yakushko@misis.ruhttps://orcid.org/0000-0003-3226-9584ВасильевА. А.VasilevA. A.

Ленинский просп., д. 29, Москва, 119991,

Ленинский просп., д. 4, Москва, 119049

Васильев Андрей Александрович — младший научный сотрудник; ассистент

29 Leninsky Ave., Moscow 119991,

4 Leninsky Ave., Moscow 119049

Andrey A. Vasilev — Junior Researcher; Assistant

raver.vasiljev@mail.ruhttps://orcid.org/0000-0003-4657-9305ПопковаА. В.PopkovaA. V.

ул. Железнодорожная, д. 24, Подольск, 142103

Попкова Алёна Васильевна — старший научный сотрудник

24 Zheleznodorozhnaya Str., Podolsk, 142103

Alena V. Popkova — Senior Researcher

popkova-alena@rambler.ruhttps://orcid.org/0000-0001-6688-2681ТаралаВ. А.TaralaV. A.

ул. Пушкина, д. 1, Ставрополь, 355017

Тарала Виталий Алексеевич — канд. хим. наук, старший научный сотрудник

1 Pushkin Str., Stavropol 355017

Vitaly А. Tarala — Cand. Sci. (Chem.), Senior Researcher

vitaly-tarala@yandex.ruhttps://orcid.org/0000-0001-5213-2951КоровинЕ. Ю.KorovinE. Yu.

ул. Сахьяновой, д. 6, Улан-Удэ, 670047, Бурятия,

просп. Ленина, д. 36, Томск, 634050

Коровин Евгений Юрьевич — канд. физ.-мат. наук

6 Sakhyanova Str., Ulan-Ude 670047, Republic of Buryatia,

36 Lenin Ave., Tomsk 634050

Evgeniy Yu. Korovin — Cand. Sci. (Phys.-Math.)

korovin_ey@mail.tsu.ruИнститут нефтехимического синтеза им. А.В. Топчиева Российской академии наук; Национальный исследовательский технологический университет «МИСиС»РоссияA.V. Topchiev Institute of Petrochemical Synthesis, RAS; National University of Science and Technology MISiSRussian FederationНациональный исследовательский технологический университет «МИСиС»РоссияNational University of Science and Technology MISiSRussian FederationАО «НИИ НПО «ЛУЧ»РоссияJSC “Research Institute NPO” LUCH”Russian FederationСеверо-Кавказский федеральный университетРоссияNorth Caucasus Federal UniversityRussian FederationИнститут физического материаловедения СО РАН; Национальный исследовательский Томский государственный университетРоссияInstitute of Physical Materials Science, Siberian Branch of the Russian Academy of Sciences; Tomsk State UniversityRussian Federation202123112021243176189Copyright © Муратов Д.Г., Кожитов Л.В., Якушко Е.В., Васильев А.А., Попкова А.В., Тарала В.А., Коровин Е.Ю., 20212021Муратов Д.Г., Кожитов Л.В., Якушко Е.В., Васильев А.А., Попкова А.В., Тарала В.А., Коровин Е.Ю.Muratov D.G., Kozhitov L.V., Yakushko E.V., Vasilev A.A., Popkova A.V., Tarala V.A., Korovin E.Y.Данная работа распространяется под лицензией Creative Commons Attribution 4.0.This work is licensed under a Creative Commons Attribution 4.0 License.https://met.misis.ru/jour/article/view/450

Магнитные наночастицы играют важную роль в современных быстроразвивающихся отраслях науки и производственной сфере, таких как устройства магнитной записи и создание феррожидкостей, медицина и химия. Одной из проблем использования магнитных наночастиц является их высокая химическая активность, приводящая к окислению на воздухе и агломерации и определяемая вкладом их высокой удельной поверхности по отношению к объему. Покрытие наночастиц углеродом уменьшает взаимодействие между наночастицами. Методом ИК-пиролиза прекурсоров типа «полимер — соли металлов» синтезированы металл-углеродные нанокомпозиты FeCoAl/C. Изучено влияние температуры синтеза (ИК-нагрева) в диапазоне от 500 до 700 °С на структуру и состав полученных наноматериалов. Показано образование наночастиц тройного твердого раствора FeCoAl с ОЦК-типом кристаллической решетки на основе FeCo. Установлено, что с ростом температуры синтеза от 500 до 700 °С средний размер области когерентного рассеяния трехкомпонентных наночастиц увеличивается с 5 до 19 нм. Повышение содержания алюминия с 20 до 30 % относительно Fe и Co приводит к уменьшению наночастиц до 15 нм, но при этом образуется также твердый раствор на основе кристаллической решетки ГЦК-Со. Показано, что с ростом температуры синтеза нанокомпозитов и росте относительного содержания Al за счет более глубокой карбонизации и структурообразующего воздействия металлов снижается степень аморфности углеродной матрицы нанокомпозитов и наблюдается формирование упорядоченной структуры кристаллитов графитоподобной фазы. Изучено влияние температуры синтеза и относительного содержания металлов на электромагнитные характеристики (комплексную диэлектрическую и магнитные проницаемости) полученных нанокомпозитов. Показано влияние условий синтеза на радиопоглощающие свойства, в частности на потери на отражение (RL) в диапазоне 3—13 ГГц.

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 dielectric and magnetic 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.

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