Evolution of the Structure and Magnetic Properties of Ni@C Composite Nanoparticles upon Annealing
- Авторлар: Uimin M.1,2, Novikov S.1, Konev A.1,2, Byzov I.1, Yermakov A.1,2, Minin A.1,2, Privalova D.1, Gaviko V.1, Shchegoleva N.1
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Мекемелер:
- Mikheev Institute of Metal Physics, Ural Branch, Russian Academy of Sciences
- Ural Federal University Named after the First President of Russia B.N. Yeltsin
- Шығарылым: Том 120, № 3 (2019)
- Беттер: 228-232
- Бөлім: Electrical and Magnetic Properties
- URL: https://journals.rcsi.science/0031-918X/article/view/168327
- DOI: https://doi.org/10.1134/S0031918X19030141
- ID: 168327
Дәйексөз келтіру
Аннотация
Nanopowders Ni@C synthesized by gas condensation have a core-shell structure. The size of the core is 2–10 nm and the thickness of the shell is 1–3 nm. The changes in the magnetic properties and the structure of these particles upon annealing in the 100–1100°C temperature range are investigated in this work. Analysis of changes in the magnetic properties, the structure, and the chemical stability shows that the core of the particles in the initial state after synthesis is a supersaturated solid solution of carbon in nickel, which decomposes into nickel and carbon upon high-temperature annealing. Rather slow cooling of nickel particles causes the carbon shell to form. The shell ensures their chemical stability.
Негізгі сөздер
Авторлар туралы
M. Uimin
Mikheev Institute of Metal Physics, Ural Branch, Russian Academy of Sciences; Ural Federal University Named after the First President of Russia B.N. Yeltsin
Хат алмасуға жауапты Автор.
Email: uimin@imp.uran.ru
Ресей, Ekaterinburg, 620108; Ekaterinburg, 620002
S. Novikov
Mikheev Institute of Metal Physics, Ural Branch, Russian Academy of Sciences
Email: uimin@imp.uran.ru
Ресей, Ekaterinburg, 620108
A. Konev
Mikheev Institute of Metal Physics, Ural Branch, Russian Academy of Sciences; Ural Federal University Named after the First President of Russia B.N. Yeltsin
Email: uimin@imp.uran.ru
Ресей, Ekaterinburg, 620108; Ekaterinburg, 620002
I. Byzov
Mikheev Institute of Metal Physics, Ural Branch, Russian Academy of Sciences
Email: uimin@imp.uran.ru
Ресей, Ekaterinburg, 620108
A. Yermakov
Mikheev Institute of Metal Physics, Ural Branch, Russian Academy of Sciences; Ural Federal University Named after the First President of Russia B.N. Yeltsin
Email: uimin@imp.uran.ru
Ресей, Ekaterinburg, 620108; Ekaterinburg, 620002
A. Minin
Mikheev Institute of Metal Physics, Ural Branch, Russian Academy of Sciences; Ural Federal University Named after the First President of Russia B.N. Yeltsin
Email: uimin@imp.uran.ru
Ресей, Ekaterinburg, 620108; Ekaterinburg, 620002
D. Privalova
Mikheev Institute of Metal Physics, Ural Branch, Russian Academy of Sciences
Email: uimin@imp.uran.ru
Ресей, Ekaterinburg, 620108
V. Gaviko
Mikheev Institute of Metal Physics, Ural Branch, Russian Academy of Sciences
Email: uimin@imp.uran.ru
Ресей, Ekaterinburg, 620108
N. Shchegoleva
Mikheev Institute of Metal Physics, Ural Branch, Russian Academy of Sciences
Email: uimin@imp.uran.ru
Ресей, Ekaterinburg, 620108