Two-stage kinetics of field-induced aggregation of medium-sized magnetic nanoparticles.
The present paper is focused on the theoretical and experimental study of the kinetics of field-induced aggregation of magnetic nanoparticles of a size range of 20-100 nm. Our results demonstrate that (a) in polydisperse suspensions, the largest particles could play a role of the centers of nucleation for smaller particles during the earliest heterogeneous nucleation stage; (b) an intermediate stage of the aggregate growth (due to diffusion and migration of individual nanoparticles towards the aggregates) is weakly influenced by the magnetic field strength, at least at high supersaturation;
University Côte d'Azur, CNRS UMR 7010 Institute of Physics of Nice, Parc Valrose, Nice 06100, France.
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Ezzaier
University Côte d'Azur, CNRS UMR 7010 Institute of Physics of Nice, Parc Valrose, Nice 06100, France.
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Alves Marins
University Côte d'Azur, CNRS UMR 7010 Institute of Physics of Nice, Parc Valrose, Nice 06100, France.
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Razvin
Laboratoire de Génie Chimique, Université de Toulouse, CNRS, INPT, UPS, Allée Emile Monso, 31030 Toulouse, France.
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Abbas
Laboratory of Physics of Lamellar Materials and Hybrid Nano-Materials, Faculty of Sciences of Bizerte, University of Carthage, 7021 Zarzouna, Tunisia.
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Ben Haj Amara
Department of Mathematical Physics, Urals Federal University, Lenina Ave. 51, 620083 Ekaterinburg, Russia.
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Zubarev
University Côte d'Azur, CNRS UMR 7010 Institute of Physics of Nice, Parc Valrose, Nice 06100, France.
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Kuzhir