Please use this identifier to cite or link to this item: http://hdl.handle.net/10995/102056
Title: Modified mean-field theory of the magnetic properties of concentrated, high-susceptibility, polydisperse ferrofluids
Authors: Solovyova, A. Y.
Elfimova, E. A.
Ivanov, A. O.
Camp, P. J.
Issue Date: 2017
Publisher: American Physical Society
Citation: Modified mean-field theory of the magnetic properties of concentrated, high-susceptibility, polydisperse ferrofluids / A. Y. Solovyova, E. A. Elfimova, A. O. Ivanov, et al. — DOI 10.1103/PhysRevE.96.052609 // Physical Review E. — 2017. — Vol. 96. — Iss. 5. — 052609.
Abstract: The effects of particle-size polydispersity on the magnetostatic properties of concentrated ferrofluids are studied using theory and computer simulation. The second-order modified mean-field (MMF2) theory of Ivanov and Kuznetsova [Phys. Rev. E 64, 041405 (2001)1063-651X10.1103/PhysRevE.64.041405] has been extended by calculating additional terms of higher order in the dipolar coupling constant in the expansions of the initial magnetic susceptibility and the magnetization curve. The theoretical predictions have been tested rigorously against results from Monte Carlo simulations of model monodisperse, bidisperse, and highly polydisperse ferrofluids. Comparisons have been made between systems with the same Langevin susceptibility and the same saturation magnetization. In all cases, the new theoretical magnetization curve shows better agreement with simulation data than does the MMF2 theory. As for the initial susceptibility, MMF2 theory is most accurate for the monodisperse model, while the new theory works best for polydisperse systems with a significant proportion of large particles. These results are important for the analysis and characterization of recently synthesized polydisperse ferrofluids with record-breaking values of the initial magnetic susceptibility. © 2017 American Physical Society.
Keywords: CURVE FITTING
INTELLIGENT SYSTEMS
MAGNETIC FLUIDS
MAGNETIC SUSCEPTIBILITY
MAGNETISM
MAGNETIZATION
MEAN FIELD THEORY
MONTE CARLO METHODS
PARTICLE SIZE
POLYDISPERSITY
ANALYSIS AND CHARACTERIZATION
INITIAL SUSCEPTIBILITY
MAGNETIZATION CURVES
MAGNETOSTATIC PROPERTIES
MODIFIED MEAN FIELDS
POLYDISPERSE FERROFLUIDS
POLYDISPERSE SYSTEMS
SIZE POLYDISPERSITY
SATURATION MAGNETIZATION
ARTICLE
COMPUTER SIMULATION
MAGNETISM
MONTE CARLO METHOD
PARTICLE SIZE
PREDICTION
THEORETICAL STUDY
URI: http://hdl.handle.net/10995/102056
Access: info:eu-repo/semantics/openAccess
SCOPUS ID: 85037141038
PURE ID: 6178783
ISSN: 24700045
DOI: 10.1103/PhysRevE.96.052609
Appears in Collections:Научные публикации, проиндексированные в SCOPUS и WoS CC

Files in This Item:
File Description SizeFormat 
2-s2.0-85037141038.pdf2,35 MBAdobe PDFView/Open


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.