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Title: | Dynamic magnetic response of a ferrofluid in a static uniform magnetic field |
Authors: | Batrudinov, T. M. Nekhoroshkova, Y. E. Paramonov, E. I. Zverev, V. S. Elfimova, E. A. Ivanov, A. O. Camp, P. J. |
Issue Date: | 2018 |
Publisher: | American Physical Society |
Citation: | Dynamic magnetic response of a ferrofluid in a static uniform magnetic field / T. M. Batrudinov, Y. E. Nekhoroshkova, E. I. Paramonov, et al. — DOI 10.1103/PhysRevE.98.052602 // Physical Review E. — 2018. — Vol. 98. — Iss. 5. — 052602. |
Abstract: | A theory for the frequency-dependent magnetic susceptibility of a ferrofluid in a static uniform magnetic field is developed, including the dipolar interactions between the constituent particles. Interactions are included within the framework of modified mean-field theory. Predictions are given for the linear responses of the magnetization to a probing ac field both parallel and perpendicular to the static field and are tested against results from Brownian dynamics simulations. The effects of the particle concentration and dipolar coupling constant on the field-dependent static susceptibilities and the frequency dispersions are shown to be substantial, which justifies taking proper account of the interactions between particles. The theory is reliable provided that the volume concentration and dipolar coupling constant are not too large and within the range of values for real ferrofluids. © 2018 American Physical Society. |
Keywords: | MAGNETIC FLUIDS MAGNETIC SUSCEPTIBILITY MEAN FIELD THEORY BROWNIAN DYNAMICS SIMULATIONS FREQUENCY DEPENDENT FREQUENCY DISPERSION MODIFIED MEAN FIELDS PARTICLE CONCENTRATIONS STATIC SUSCEPTIBILITY UNIFORM MAGNETIC FIELDS VOLUME CONCENTRATION MAGNETIC FIELDS |
URI: | http://elar.urfu.ru/handle/10995/101911 |
Access: | info:eu-repo/semantics/openAccess |
RSCI ID: | 38624147 |
SCOPUS ID: | 85056410441 |
PURE ID: | 8323740 7063b291-f5e5-4d00-abea-53783f6e96ca |
ISSN: | 24700045 |
DOI: | 10.1103/PhysRevE.98.052602 |
Appears in Collections: | Научные публикации ученых УрФУ, проиндексированные в SCOPUS и WoS CC |
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2-s2.0-85056410441.pdf | 1,56 MB | Adobe PDF | View/Open |
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