Abstract
The magnetic size effects of single-domain nickel nanoparticles encapsulated in a graphite-like carbon shell (Ni@C nanocomposites) have been studied. Along with ferro- and superparamagnetic characteristics, the samples exhibit paramagnetism due to surface nickel ions formed through charge transfer from the carbon matrix. A detailed analysis of the total curves of magnetization M(H) and coercivity at 10 K was carried out and the corresponding magnetic parameters were determined.
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ACKNOWLEDGMENTS
The author expresses profound gratitude to E.G. Sharoyan and A.S. Manukyan for their assistance in analyzing numerous experimental results and to V. Mekhitarian for help in the fitting of the magnetic curves.
Funding
The study was financially supported by the research and innovation program “Horizon 2020” of the European Union under grant agreement No. 857502 (MaNaCa), as well as by the Science Committee of the Republic of Armenia within the framework of project N 1-6/23-I/IPR.
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Translated by H. Gyulasaryan
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Gyulasaryan, H.T. Analysis of the Magnetic Characteristics of Single-Domain Ferromagnetic and Superparamagnetic Nanoparticles in a Ni@C Nanocomposite. J. Contemp. Phys. 58, 282–286 (2023). https://doi.org/10.1134/S1068337223030118
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DOI: https://doi.org/10.1134/S1068337223030118