Dynamical susceptibility of interacting superparamagnetic particles in a static magnetic field; [Динамическая восприимчивость взаимодействующих суперпарамагнитных частиц в постоянном магнитном поле]
Электронный научный архив УРФУ
Информация об архиве | Просмотр оригинала| Поле | Значение | |
| Заглавие |
Dynamical susceptibility of interacting superparamagnetic particles in a static magnetic field; [Динамическая восприимчивость взаимодействующих суперпарамагнитных частиц в постоянном магнитном поле]
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| Автор |
Ambarov, A. V.
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| Тематика |
DYNAMIC SUSCEPTIBILITY
FOKKER – PLANCK – BROWN EQUATIONS PROBABILITY DENSITY |
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| Описание |
Background and Objectives: Embedding a large number of magnetic nanoparticles into liquid or polymer matrix makes it possible to control the properties of a composite material using an external magnetic field. Such materials, so-called magnetic soft matter, include ferrofluids, magnetic elastomers, ferrogels, and various biocompatible magnetic filling. These complex systems attract a considerable amount of interest from researchers, medics and engineers because they are actively used in progressive high industrial and biomedical technologies. The dynamical response of an ensemble of interacting superparamagnetic particles in static and linearly polarized alternating magnetic fields is theoretically investigated. Materials and Methods: The rotational motion of the magnetic moment of a random ferroparticle is determined from the solution of the Fokker – Planck – Brown equation, which introduces an additional term that allows us to take into account the interparticle dipole-dipole interactions at the level of the modified first-order mean field theory. Results: The obtained analytical solutions for the probability density of the orientation of the magnetic moment of a random particle are used to determine the dynamical susceptibility. The spectrum of dynamical susceptibility is studied as a function of the static field strength, the magneto-crystallographic anisotropy parameter, the Langevin susceptibility of the ferroparticle ensemble, and the mutual orientation of the alternating and static magnetic fields. Conclusion: The obtained results represent essential information in the design and synthesis of new functional materials. © 2022 by the authors.
Russian Foundation for Basic Research, РФФИ, (20-32-90209) Abstract. Background and Objectives: Embedding a large number of magnetic nanoparticles into liquid or polymer matrix makes it possible to control the properties of a composite material using an external magnetic field. Such materials, so-called magnetic soft matter, include ferrofluids, magnetic elastomers, ferrogels, and various biocompatible magnetic filling. These complex systems attract a considerable amount of interest from researchers, medics and engineers because they are actively used in progressive high industrial and biomedical technologies. The dynamical response of an ensemble of interacting superparamagnetic particles in static and linearly polarized alternating magnetic fields is theoretically investigated. Materials and Methods: The rotational motion of the magnetic moment of a random ferroparticle is determined from the solution of the Fokker – Planck – Brown equation, which introduces an additional term that allows us to take into account the interparticle dipole-dipole interactions at the level of the modified first-order mean field theory. Results: The obtained analytical solutions for the probability density of the orientation of the magnetic moment of a random particle are used to determine the dynamical susceptibility. The spectrum of dynamical susceptibility is studied as a function of the static field strength, the magneto-crystallographic anisotropy parameter, the Langevin susceptibility of the ferroparticle ensemble, and the mutual orientation of the alternating and static magnetic fields. Conclusion: The obtained results represent essential information in the design and synthesis of new functional materials. Keywords: dynamic susceptibility, probability density, Fokker – Planck – Brown equations Acknowledgements: The reported study was funded by RFBR according to the reserach project No. 20-32-90209. For citation: Ambarov A. V. Dynamical susceptibility of interacting superparamagnetic particles in a static magnetic field. Izvestiya of Saratov University. Physics, 2022, vol. 22, iss. 2, рр. 131–140 (in Russian). https://doi.org/10.18500/1817-3020-2022-22-2-131-140 This is an open access article distributed under the terms of Creative Commons Attribution 4.0 International License (CC0-BY 4.0) |
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| Дата |
2024-04-22T15:53:42Z
2024-04-22T15:53:42Z 2022 |
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| Тип |
Article
Journal article (info:eu-repo/semantics/article) Published version (info:eu-repo/semantics/publishedVersion) |
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| Идентификатор |
Амбаров, АВ 2022, 'Динамическая восприимчивость взаимодействующих суперпарамагнитных частиц в постоянном магнитном поле', Известия Саратовского университета. Новая серия. Серия: Физика, Том. 22, № 2, стр. 131-140. https://doi.org/10.18500/1817-3020-2022-22-2-131-140
Амбаров, А. В. (2022). Динамическая восприимчивость взаимодействующих суперпарамагнитных частиц в постоянном магнитном поле. Известия Саратовского университета. Новая серия. Серия: Физика, 22(2), 131-140. https://doi.org/10.18500/1817-3020-2022-22-2-131-140 Darusalam, Omar, N., Janssen, M., Said, J., & Sohag, K. (2023). The influence of ICT diffusion and globalization on the quality of governance: A study using panel data from ASEAN countries. Information Development, 39(1), 46–59. doi:10.1177/02666669211026363 1817-3020 Final All Open Access; Gold Open Access https://doi.org/10.18500/1817-3020-2022-22-2-131-140 https://doi.org/10.18500/1817-3020-2022-22-2-131-140 http://elar.urfu.ru/handle/10995/132478 https://www.scopus.com/inward/record.uri?eid=2-s2.0-85109126718&doi=10.1177%2f02666669211026363&partnerID=40&md5=075473f42b0be5136cfd9ed98e19960d 48719580 10.18500/1817-3020-2022-22-2-131-140 85134417782 000596869900010 |
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| Язык |
ru
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| Права |
Open access (info:eu-repo/semantics/openAccess)
cc-by |
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| Формат |
application/pdf
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| Издатель |
Saratov State University
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| Источник |
Izvestiya of Saratov University. Physics
Izvestiya of Saratov University. Physics |
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