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Fizika Tverdogo Tela, 2019, Volume 61, Issue 2, Pages 211–219
DOI: https://doi.org/10.21883/FTT.2019.02.47115.211
(Mi ftt8906)
 

This article is cited in 10 scientific papers (total in 10 papers)

Metals

The influence of relative content of a metal component in a dielectric matrix on the formation and dimensions of cobalt nanocrystallites in Co$_{x}$(MgF$_{2}$)$_{100-x}$ film composites

È. P. Domashevskayaa, S. A. Ivkova, A. V. Sitnikovb, O. V. Stogneib, A. T. Kozakovc, A. V. Nikol'skiic

a Voronezh State University
b Voronezh State Technical University
c Southern Federal University, Rostov-on-Don
Abstract: The influence of relative content of a metal component on the phase composition and substructure of Co$_{x}$(MgF$_{2}$)$_{100-x}$ in a wide range of $x$ = 16–63 at % is studied by X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS) and infrared (IR) spectroscopy. The layers of nanocomposite with a micron thickness have been obtained by the ion-beam sputtering of the target in the argon environment. The results reveal that the relative metal cobalt content in the MgF$_2$ dielectric matrix strongly affects the phase composition and substructure of nanocomposites. With a lower content of cobalt, it is in the amorphous state in the form of clusters in the Mg$F_2$ nanocrystalline matrix. An increase of cobalt content to $x$ = 29 at % on a sitall substrate and to $x$ = 42 at % on a glass substrate in the X-ray amorphous MgF$_2$ dielectric matrix leads to the formation of cobalt nanocrystals with a hexagonal crystallographic system, whose sizes are on the order of 10 nm. These are predominately oriented in the basis plane of the (001) hexagonal lattice of $\alpha$-Со. A further increase of cobalt content to $c$ = 59 at % enlarges the $\alpha$-Со nanocrystals to $\sim$20 nm with retaining the same orientation. In accordance with a fine structure analysis of XPS spectra of Со $2p$ and О $1s$, cobalt is strongly oxidized on the surface of all the composites; only on the surface of samples with a low content of Co is X-ray amorphous cobalt found in a metallic state along with cobalt oxide. The IR spectra of these samples with the lowest metal phase content exhibit the pronounced modes from the nanocrystalline MgF$_2$ dielectric phase.
Funding agency Grant number
Ministry of Education and Science of the Russian Federation 3.6263.2017/ВУ
Received: 08.08.2018
English version:
Physics of the Solid State, 2019, Volume 61, Issue 2, Pages 71–79
DOI: https://doi.org/10.1134/S1063783419020112
Bibliographic databases:
Document Type: Article
Language: Russian
Citation: È. P. Domashevskaya, S. A. Ivkov, A. V. Sitnikov, O. V. Stognei, A. T. Kozakov, A. V. Nikol'skii, “The influence of relative content of a metal component in a dielectric matrix on the formation and dimensions of cobalt nanocrystallites in Co$_{x}$(MgF$_{2}$)$_{100-x}$ film composites”, Fizika Tverdogo Tela, 61:2 (2019), 211–219; Phys. Solid State, 61:2 (2019), 71–79
Citation in format AMSBIB
\Bibitem{DomIvkSit19}
\by \`E.~P.~Domashevskaya, S.~A.~Ivkov, A.~V.~Sitnikov, O.~V.~Stognei, A.~T.~Kozakov, A.~V.~Nikol'skii
\paper The influence of relative content of a metal component in a dielectric matrix on the formation and dimensions of cobalt nanocrystallites in Co$_{x}$(MgF$_{2}$)$_{100-x}$ film composites
\jour Fizika Tverdogo Tela
\yr 2019
\vol 61
\issue 2
\pages 211--219
\mathnet{http://mi.mathnet.ru/ftt8906}
\crossref{https://doi.org/10.21883/FTT.2019.02.47115.211}
\elib{https://elibrary.ru/item.asp?id=37477963}
\transl
\jour Phys. Solid State
\yr 2019
\vol 61
\issue 2
\pages 71--79
\crossref{https://doi.org/10.1134/S1063783419020112}
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  • This publication is cited in the following 10 articles:
    Citing articles in Google Scholar: Russian citations, English citations
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