Please use this identifier to cite or link to this item: http://hdl.handle.net/10995/101682
Title: Magnetic properties of clusters of supracolloidal magnetic polymers with central attraction
Authors: Novak, E. V.
Zverev, V. S.
Pyanzina, E. S.
Sánchez, P. A.
Kantorovich, S. S.
Issue Date: 2020
Publisher: Elsevier B.V.
Citation: Magnetic properties of clusters of supracolloidal magnetic polymers with central attraction / E. V. Novak, V. S. Zverev, E. S. Pyanzina, et al. — DOI 10.1016/j.jmmm.2019.166025 // Journal of Magnetism and Magnetic Materials. — 2020. — Vol. 497. — 166025.
Abstract: Supracolloidal magnetic polymers (SMPs) are structures made by crosslinking magnetic particles. In this work, using Langevin dynamics simulations, we study the zero-field magnetic properties of clusters formed in suspensions of SMPs with different topologies – chains, rings, X and Y – that interact via Stockmayer potential. We find that the presence of central attraction, resulting in the formation of large compact clusters, leads to a dramatic decrease of the suspension initial susceptibility, independently from SMP topology. However, the largest decrease corresponds to chain-like SMPs with strongly interacting particles. This is due to the higher rotational degrees of freedom of SMPs with such topology, which allows the particles to reorganise themselves inside the clusters in such a way that their magnetic moments form energetically advantageous vortex structures with negligible net magnetic moments. © 2019 Elsevier B.V.
Keywords: INITIAL SUSCEPTIBILITY
LANGEVIN DYNAMICS SIMULATIONS
MAGNETIC PROPERTIES
STOCKMAYER INTERACTION
SUPRACOLLOIDAL MAGNETIC POLYMERS
CROSSLINKING
DEGREES OF FREEDOM (MECHANICS)
MAGNETIC MOMENTS
MAGNETIC PROPERTIES
MOLECULAR DYNAMICS
TOPOLOGY
VORTEX FLOW
INITIAL SUSCEPTIBILITY
INTERACTING PARTICLES
LANGEVIN DYNAMICS
MAGNETIC PARTICLE
MAGNETIC POLYMERS
ROTATIONAL DEGREES OF FREEDOM
STOCKMAYER INTERACTION
VORTEX STRUCTURES
POLYMERS
URI: http://hdl.handle.net/10995/101682
Access: info:eu-repo/semantics/openAccess
SCOPUS ID: 85074168655
PURE ID: 11098375
a21268b9-c822-4969-ac43-9961793b845a
ISSN: 3048853
DOI: 10.1016/j.jmmm.2019.166025
metadata.dc.description.sponsorship: Research supported by the Russian Science Foundation Grant No. 19-72-10033 . S.S.K. acknowledges support from the Austrian Research Fund (FWF), START-Projekt Y 627-N27.
RSCF project card: 19-72-10033
Appears in Collections:Научные публикации, проиндексированные в SCOPUS и WoS CC

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