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Equilibrium properties of magnetic filament suspensions

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arxiv 1710.08956 v2 pith:5FFUWTLK submitted 2017-10-24 cond-mat.soft

Equilibrium properties of magnetic filament suspensions

classification cond-mat.soft
keywords filamentsmagneticdependsequilibriumfilamentnanoparticlespropertiessusceptibility
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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Langevin dynamics is used to study equilibrium properties of the suspension of magnetic filaments (chains of nanoparticles permanently crosslinked with polymers). It is shown that the filament suspension generally has a larger magnetic susceptibility than the system of unlinked nanoparticles with the same average particle concentration. However, actual susceptibility gain strongly depends on length and flexibility of filaments. It is also shown that in a strong gravitational (centrifugal) field sedimentation profiles of filaments are less homogeneous than that of unlinked particles. The spatial distribution of filaments weakly depends on the intensity of interparticle dipole-dipole interactions.

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