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On features of the magnetic structure of spherical iron nanoparticles |
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| Authors: | V V Uglov V M Astashynski N T Kvasov I L Doroshevich |
| Institution: | 1. Belarusian State University, Minsk, 220030, Belarus 2. Stepanov Institute of Physics, National Academy of Sciences of Belarus, Minsk, 220072, Belarus 3. Belarusian State University of Informatics and Radioelectronics, Minsk, 220013, Belarus |
| Abstract: | The results of research into the behavior of the magnetic structure inherent to spherical ferromagnetic nanoparticles with radii of 5–30 nm are presented. The behavioral features are investigated in an external magnetic field by means of computer modeling. The hysteresis loops and formation of the vortex structure of magnetization are analyzed using particles with different sizes. The size effect of changes in the magnetization symmetry, which is analogous to phase transitions of the second kind, is established. The magnetic moments of spherical iron nanoparticles with radii of 5–30 nm are calculated. Calculations are performed by means of the Nmag micromagnetic simulation package. |
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