Enviar artigo por via de e-mail Magnetization features of small multi-core particles: theory and computer simulations
- Autores: Grokhotova E.V.1, Solovyova A.Y.1, Elfimova E.A.1
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Afiliações:
- Ural Federal University
- Edição: Volume 88, Nº 10 (2024)
- Páginas: 1557-1563
- Seção: Physics of magnetic fluids and composite materials based on them
- URL: https://journal-vniispk.ru/0367-6765/article/view/283367
- DOI: https://doi.org/10.31857/S0367676524100097
- EDN: https://elibrary.ru/DTCYIR
- ID: 283367
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Resumo
We investigated the orientation texturing of magnetic moments of four magnetic nanoparticles fixed at the vertices of a regular tetrahedron and formed a separate polyhedral particle. Numerical calculations of the probability density of the magnetic moment orientation, the static magnetization and the initial magnetic susceptibility of a multi-core particle are obtained by the Monte-Carlo method.
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Sobre autores
E. Grokhotova
Ural Federal University
Autor responsável pela correspondência
Email: lena.groxotova@mail.ru
Rússia, Ekaterinburg
A. Solovyova
Ural Federal University
Email: lena.groxotova@mail.ru
Rússia, Ekaterinburg
E. Elfimova
Ural Federal University
Email: lena.groxotova@mail.ru
Rússia, Ekaterinburg
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Fig. 1. Structure of the model MGP. Granules with diameter d are located at the vertices of a tetrahedron with edge A.
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Fig. 2. Dependence of the single-particle probability density W on the angle ωk for a model MGP with edge A = 1 and λe = 1: (a), α = 0; (b), α = 1; (c), α = 0; (d), α = 1; (d), α = 0; (e), α = 1. The symbols denote the results of Monte Carlo simulation. The symbol number corresponds to the granule number in the model MGP.
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Fig. 3. Dependence of the single-particle probability density W on the angle ωk for a model MGP with edge A = 1 and λe = 3: (a), α = 0; (b), α = 1; (c), α = 0; (d), α = 1; (d), α = 0; (e), α = 1. The symbols denote the results of Monte Carlo simulation. The symbol number corresponds to the granule number in the model MGP.
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Fig. 4. Dependence of magnetization M on the Langevin parameter α for a model MGP with edge A = 1: (a) , ; (b) , ; (c) , . The symbols denote the results of Monte Carlo simulations for different values of the parameter λe, as indicated in the legend. The dotted line corresponds to the Langevin magnetization L(α).
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