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This article is cited in 7 scientific papers (total in 7 papers)
Mössbauer studies of the structure of core/shell Fe$_{3}$O$_{4}/\gamma$-Fe$_{2}$O$_{3}$ nanoparticles
A. S. Kamzina, I. M. Obaidatb, A. A. Valiullinc, V. G. Semenovd, I. A. Al-Omarie, C. Nayekb a Ioffe Institute, St. Petersburg
b Department of Physics, United Arab Emirates University, Al-Ain, United Arab Emirates
c Kazan (Volga Region) Federal University
d Saint Petersburg State University
e Department of Physics, Sultan Qaboos University, Muscat, Sultanate of Oman
Abstract:
The phase composition, the structure of cores and shells, and the dependences of the shell thickness on the fabrication technique were determined by Mössbauer spectroscopy for core/shell Fe$_{3}$O$_{4}/\gamma$-Fe$_{2}$O$_{3}$ magnetic nanoparticles (MNPs) with (Fe$_{3}$O$_{4}$) cores of a fixed size (8 nm) and $\gamma$-Fe$_{2}$O$_{3}$ shells of a varying thickness (1, 3, or 5 nm). A layer on the MNP surface with a magnetic state differing from that in the bulk was found. It was also found that a spin-glass state probably exists between the core and the shell. The studied core/shell Fe$_{3}$O$_{4}/\gamma$-Fe$_{2}$O$_{3}$ MNPs have promising applications in various fields (e.g., biomedicine).
Received: 24.12.2018 Revised: 24.12.2018 Accepted: 05.02.2019
Citation:
A. S. Kamzin, I. M. Obaidat, A. A. Valiullin, V. G. Semenov, I. A. Al-Omari, C. Nayek, “Mössbauer studies of the structure of core/shell Fe$_{3}$O$_{4}/\gamma$-Fe$_{2}$O$_{3}$ nanoparticles”, Pisma v Zhurnal Tekhnicheskoi Fiziki, 45:9 (2019), 6–9; Tech. Phys. Lett., 45:5 (2019), 426–429
Linking options:
https://www.mathnet.ru/eng/pjtf5443 https://www.mathnet.ru/eng/pjtf/v45/i9/p6
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