Field-induced self-assembly of iron oxide nanoparticles investigated using small-angle neutron scattering

Zhendong Fu; Yinguo Xiao; Artem Feoktystov; Vitaliy Pipich; Marie-Sousai Appavou; Yixi Su; Erxi Feng; Wentao Jin; Thomas Brückel

doi:10.1039/C6NR06275J

Field-induced self-assembly of iron oxide nanoparticles investigated using small-angle neutron scattering

Zhendong Fu,*^a Yinguo Xiao,^b Artem Feoktystov,^a Vitaliy Pipich,^a Marie-Sousai Appavou,^a Yixi Su,^a Erxi Feng,^a Wentao Jin^a and Thomas Brückel^b

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* Corresponding authors

^a Jülich Centre for Neutron Science (JCNS) at Heinz Maier-Leibnitz Zentrum (MLZ), Forschungszentrum Jülich GmbH, Lichtenbergstraße 1, D-85748 Garching, Germany
E-mail: z.fu@fz-juelich.de

^b Jülich Centre for Neutron Science and Peter Grünberg Institut, JARA-FIT, Forschungszentrum Jülich GmbH, 52425 Jülich, Germany

Abstract

The magnetic-field-induced assembly of magnetic nanoparticles (NPs) provides a unique and flexible strategy in the design and fabrication of functional nanostructures and devices. We have investigated the field-induced self-assembly of core–shell iron oxide NPs dispersed in toluene by means of small-angle neutron scattering (SANS). The form factor of the core–shell NPs was characterized and analyzed using SANS with polarized neutrons. Large-scale aggregates of iron oxide NPs formed above 0.02 T as indicated by very-small-angle neutron scattering measurements. A three-dimensional long-range ordered superlattice of iron oxide NPs was revealed under the application of a moderate magnetic field. The crystal structure of the superlattice has been identified to be face-centred cubic.

Article information

https://doi.org/10.1039/C6NR06275J

Article type

Paper

Submitted

08 Aug 2016

Accepted

06 Oct 2016

First published

26 Oct 2016

This article is Open Access

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Nanoscale, 2016,8, 18541-18550

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Field-induced self-assembly of iron oxide nanoparticles investigated using small-angle neutron scattering

Z. Fu, Y. Xiao, A. Feoktystov, V. Pipich, M. Appavou, Y. Su, E. Feng, W. Jin and T. Brückel, Nanoscale, 2016, 8, 18541 DOI: 10.1039/C6NR06275J

This article is licensed under a Creative Commons Attribution 3.0 Unported Licence. You can use material from this article in other publications without requesting further permissions from the RSC, provided that the correct acknowledgement is given.

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Field-induced self-assembly of iron oxide nanoparticles investigated using small-angle neutron scattering

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Field-induced self-assembly of iron oxide nanoparticles investigated using small-angle neutron scattering

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