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Technical Physics Letters

, Volume 45, Issue 5, pp 426–429 | Cite as

Mössbauer Studies of the Structure of Core/Shell Fe3O4/γ-Fe2O3 Nanoparticles

  • A. S. KamzinEmail author
  • I. M. Obaidat
  • A. A. Valliulin
  • V. G. Semenov
  • I. A. Al-Omari
  • C. Nayek
Article
  • 16 Downloads

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).

Notes

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Copyright information

© Pleiades Publishing, Ltd. 2019

Authors and Affiliations

  • A. S. Kamzin
    • 1
    Email author
  • I. M. Obaidat
    • 2
  • A. A. Valliulin
    • 3
  • V. G. Semenov
    • 4
  • I. A. Al-Omari
    • 5
  • C. Nayek
    • 2
  1. 1.Ioffe Physical Technical Institute, Russian Academy of SciencesSt. PetersburgRussia
  2. 2.Department of Physics, United Arab Emirates UniversityAl-AinUnited Arab Emirates
  3. 3.Kazan Federal UniversityKazanRussia
  4. 4.St. Petersburg State UniversitySt. PetersburgRussia
  5. 5.Department of Physics, Sultan Qaboos UniversityMuscatSultanate of Oman

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