Mössbauer Studies of the Structure of Core/Shell Fe3O4/γ-Fe2O3 Nanoparticles
- Authors: Kamzin A.S.1, Obaidat I.M.2, Valliulin A.A.3, Semenov V.G.4, Al-Omari I.A.5, Nayek C.2
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Affiliations:
- Ioffe Physical Technical Institute, Russian Academy of Sciences
- Department of Physics, United Arab Emirates University
- Kazan Federal University
- St. Petersburg State University
- Department of Physics, Sultan Qaboos University
- Issue: Vol 45, No 5 (2019)
- Pages: 426-429
- Section: Article
- URL: https://bakhtiniada.ru/1063-7850/article/view/208295
- DOI: https://doi.org/10.1134/S1063785019050079
- ID: 208295
Cite item
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 Fe3O4/γ-Fe2O3 magnetic nanoparticles (MNPs) with Fe3O4 cores of a fixed size (8 nm) and γ-Fe2O3 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 Fe3O4/γ-Fe2O3 MNPs have promising applications in various fields (e.g., biomedicine).
About the authors
A. S. Kamzin
Ioffe Physical Technical Institute, Russian Academy of Sciences
Author for correspondence.
Email: ASKam@mail.ioffe.ru
Russian Federation, St. Petersburg, 194021
I. M. Obaidat
Department of Physics, United Arab Emirates University
Email: ASKam@mail.ioffe.ru
United Arab Emirates, Al-Ain
A. A. Valliulin
Kazan Federal University
Email: ASKam@mail.ioffe.ru
Russian Federation, Kazan, 420008
V. G. Semenov
St. Petersburg State University
Email: ASKam@mail.ioffe.ru
Russian Federation, St. Petersburg, 199034
I. A. Al-Omari
Department of Physics, Sultan Qaboos University
Email: ASKam@mail.ioffe.ru
Oman, Muscat
C. Nayek
Department of Physics, United Arab Emirates University
Email: ASKam@mail.ioffe.ru
United Arab Emirates, Al-Ain
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