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|Title:||Two-stage kinetics of field-induced aggregation of medium-sized magnetic nanoparticles|
Alves, Marins, J.
Ben, Haj, Amara, A.
|Publisher:||American Institute of Physics Inc.|
|Citation:||Two-stage kinetics of field-induced aggregation of medium-sized magnetic nanoparticles / H. Ezzaier, J. Alves Marins, I. Razvin, et al. — DOI 10.1063/1.4977993 // Journal of Chemical Physics. — 2017. — Vol. 146. — Iss. 11. — 114902.|
|Abstract:||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; (c) the stage of direct coalescence of drop-like aggregates (occurring under magnetic attraction between them) plays a dominant role at the intermediate and late stages of the phase separation, with the time scale decreasing as a square of the aggregate magnetization. © 2017 Author(s).|
DIFFUSION AND MIGRATION
MAGNETIC FIELD STRENGTHS
|Appears in Collections:||Научные публикации, проиндексированные в SCOPUS и WoS CC|
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