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Issue 43, 2018
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Shaping iron oxide nanocrystals for magnetic separation applications

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Abstract

Iron oxide nanostructures are attractive for a variety of bio-related applications given their wide range of magnetic properties. Here, we report on the study of the magnetophoretic mobility of octapod-shaped nanocrystals, which we relate to stoichiometry, quality and elongation in the 〈111〉 direction of these cubic structures. This special morphology combines magnetocrystalline anisotropies, increases shape anisotropy and hinders the formation of an epitaxial wüstite-magnetite interface. As a result, one obtains nanocrystals with large magnetic susceptibility and small coercivity, that is, with optimum characteristics for magnetic guidance, separation, and drug delivery, due to the increased magnetophoretic mobility displayed.

Graphical abstract: Shaping iron oxide nanocrystals for magnetic separation applications

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Article information


Submitted
20 Jul 2018
Accepted
22 Oct 2018
First published
25 Oct 2018

Nanoscale, 2018,10, 20462-20467
Article type
Paper

Shaping iron oxide nanocrystals for magnetic separation applications

M. Testa-Anta, S. Liébana-Viñas, B. Rivas-Murias, B. Rodríguez González, M. Farle and V. Salgueiriño, Nanoscale, 2018, 10, 20462
DOI: 10.1039/C8NR05864D

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