MAGNETIC PROPERTIES OF (NI–CO)@C NANOCOMPOSITES: EFFECT OF CARBON
- Authors: Uimin M.A.1, Konev A.S.1, Yermakov A.Y.1,2, Novikov S.I.1, Kurmachev I.A.1, Gaviko V.S.1,2, Mikhalev K.N.1, Prokopyev D.A.1, Suvorkova E.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://journal-vniispk.ru/0015-3230/article/view/322664
- DOI: https://doi.org/10.31857/S0015323025060065
- ID: 322664
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Abstract
Nanocomposites (Ni–Co)@C with different Ni:Co ratios and core-shell structure were obtained by gas-phase 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
M. A. Uimin
Institute of Metal Physics, Ural Branch of the Russian Academy of Sciences
Email: uimin@imp.uran.ru
Ekaterinburg, 620108 Russia
A. S. Konev
Institute of Metal Physics, Ural Branch of the Russian Academy of Sciences
Email: uimin@imp.uran.ru
Ekaterinburg, 620108 Russia
A. Y. Yermakov
Institute of Metal Physics, Ural Branch of the Russian Academy of Sciences; Ural Federal University
Email: uimin@imp.uran.ru
Ekaterinburg, 620108 Russia; Ekaterinburg, 620002 Russia
S. I. Novikov
Institute of Metal Physics, Ural Branch of the Russian Academy of Sciences
Email: uimin@imp.uran.ru
Ekaterinburg, 620108 Russia
I. A. Kurmachev
Institute of Metal Physics, Ural Branch of the Russian Academy of Sciences
Email: uimin@imp.uran.ru
Ekaterinburg, 620108 Russia
V. S. Gaviko
Institute of Metal Physics, Ural Branch of the Russian Academy of Sciences; Ural Federal University
Email: uimin@imp.uran.ru
Ekaterinburg, 620108 Russia; Ekaterinburg, 620002 Russia
K. N. Mikhalev
Institute of Metal Physics, Ural Branch of the Russian Academy of Sciences
Email: uimin@imp.uran.ru
Ekaterinburg, 620108 Russia
D. A. Prokopyev
Institute of Metal Physics, Ural Branch of the Russian Academy of Sciences
Email: uimin@imp.uran.ru
Ekaterinburg, 620108 Russia
E. V. Suvorkova
Institute of Metal Physics, Ural Branch of the Russian Academy of Sciences
Email: uimin@imp.uran.ru
Ekaterinburg, 620108 Russia
V. V. Makarov
Institute of Metal Physics, Ural Branch of the Russian Academy of Sciences
Author for correspondence.
Email: uimin@imp.uran.ru
Ekaterinburg, 620108 Russia
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