Please use this identifier to cite or link to this item: http://hdl.handle.net/10995/101911
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://hdl.handle.net/10995/101911
Access: info:eu-repo/semantics/openAccess
SCOPUS ID: 85056410441
PURE ID: 8323740
7063b291-f5e5-4d00-abea-53783f6e96ca
ISSN: 24700045
DOI: 10.1103/PhysRevE.98.052602
Appears in Collections:Научные публикации, проиндексированные в SCOPUS и WoS CC

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