MAGNETIC PROPERTIES OF (Ni–Co)@C NANOCOMPOSITES: EFFECT OF CARBON
- Authors: Uimin M.A.1, Konev A.S.1, Yermakov A.E.1,2, Novikov S.I.1, Kurmachev I.A.1, Gaviko V.S.1,2, Mikhalev K.N.1, Prokopiev D.A.1, Suvorkova Y.V.1, Makarov V.V.1
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Affiliations:
- Institute of Metal Physics, Ural Branch of the Russian Academy of Sciences
- Ural Federal University
- Issue: Vol 126, No 6 (2025)
- Pages: 680-688
- Section: ЭЛЕКТРИЧЕСКИЕ И МАГНИТНЫЕ СВОЙСТВА
- URL: https://journals.rcsi.science/0015-3230/article/view/292004
- DOI: https://doi.org/10.31857/S0015323025060065
- ID: 292004
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Abstract
Nanocomposites (Ni–Co)@C with different Ni:Co ratios and core-shell structure were obtained by gasphase synthesis. Structural and phase analysis of the samples was carried out using X-ray diffraction and
transmission electron microscopy. The size of the metal core of particles, determined from X-ray data, is (7–8) nm, the shell thickness, several nm. Magnetic properties and 59Co NMR spectra were measured before and after annealing at different temperatures. The evolution of properties and NMR spectra with varying cobalt content and as a result of heat treatments is interpreted in the context of changes in the carbon content in the core of composites.
Keywords
About the authors
Mikhail Aleksandrovich Uimin
Institute of Metal Physics, Ural Branch of the Russian Academy of Sciences
Author for correspondence.
Email: uimin@imp.uran.ru
ORCID iD: 0000-0003-3906-8101
Laboratory of Applied Magnetism, leading researcher
Russian Federation, Ekaterinburg, 620108 RussiaAleksandr Sergeevich Konev
Institute of Metal Physics, Ural Branch of the Russian Academy of Sciences
Email: askonev@gmail.com
Russian Federation, Ekaterinburg, 620108 Russia
Anatoliy Egorovich Yermakov
Institute of Metal Physics, Ural Branch of the Russian Academy of Sciences;Ural Federal University
Email: yermakov@imp.uran.ru
Russian Federation, Ekaterinburg, 620108 Russia;
Ekaterinburg, 620002 Russia
Sergey Ivanovich Novikov
Institute of Metal Physics, Ural Branch of the Russian Academy of Sciences
Email: novikovsi@internet.ru
Russian Federation, Ekaterinburg, 620108 Russia
Igor Aleksandrovich Kurmachev
Institute of Metal Physics, Ural Branch of the Russian Academy of Sciences
Email: kiavvvvv@gmail.com
Russian Federation, Ekaterinburg, 620108 Russia
Vasiliy Semenovich Gaviko
Institute of Metal Physics, Ural Branch of the Russian Academy of Sciences;Ural Federal University
Email: gaviko@imp.uran.ru
Russian Federation, Ekaterinburg, 620108 Russia;
Ekaterinburg, 620002 Russia
Konstantin Nikolaevich Mikhalev
Institute of Metal Physics, Ural Branch of the Russian Academy of Sciences
Email: mikhalev@imp.uran.ru
Russian Federation, Ekaterinburg, 620108 Russia
Dmitriy Andreevich Prokopiev
Institute of Metal Physics, Ural Branch of the Russian Academy of Sciences
Email: prokopev.dima@mail.ru
Russian Federation, Ekaterinburg, 620108 Russia
Yekaterina Vitalievna Suvorkova
Institute of Metal Physics, Ural Branch of the Russian Academy of Sciences
Email: e.v.suvorkova@mail.ru
Russian Federation, Ekaterinburg, 620108 Russia
Vladimir Viktorovich Makarov
Institute of Metal Physics, Ural Branch of the Russian Academy of Sciences
Email: makarov@imp.uran.ru
Russian Federation, Ekaterinburg, 620108 Russia
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