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Magnetomigration of Rare-Earth Ions Triggered by Concentration Gradients

par Rodrigues, Isadora I.R.;Lukina, Liubov;Dehaeck, Sam ;Colinet, Pierre ;Binnemans, Koen;Fransaer, Jan
Référence The Journal of Physical Chemistry Letters, 8, 21, page (5301-5305)
Publication Publié, 2017-11

Article révisé par les pairs

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Résumé :

Mach-Zehnder interferometry was applied to explore the effects of inhomogeneous magnetic fields on the mobility of rare-earth ions in aqueous solutions. No migration of ions was observed in a thermodynamically closed system when a homogeneous solution was subjected to a magnetic field gradient alone. However, magnetomigration could be triggered by a concentration gradient of the rare-earth ions in the solution. When a concentration gradient was introduced in the sample by solvent evaporation, consistent migration of paramagnetic Dy3+ ions from the bulk solution to regions with stronger magnetic fields was observed. By contrast, no movement was detected for diamagnetic Y3+ ions in the presence of a concentration gradient.