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Volume 181, 2015
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Directing the orientational alignment of anisotropic magnetic nanoparticles using dynamic magnetic fields

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Abstract

The structure-directing influence of static and dynamic, i.e. rotating, magnetic fields on the orientational alignment of spindle-type hematite particles with a high aspect ratio is investigated. Structural characterization using electron microscopy and small-angle X-ray scattering confirms a nearly collinear particle arrangement with orientation of the main particle axis either parallel or perpendicular to the substrate as directed by the magnetic field geometry. The combination of large structural and magnetocrystalline anisotropies results in significantly different, strongly anisotropic magnetic properties of the assemblies revealed by directional magnetization measurements.

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Publication details

The article was received on 01 Dec 2014, accepted on 05 Jan 2015 and first published on 08 Jan 2015


Article type: Paper
DOI: 10.1039/C4FD00242C
Citation: Faraday Discuss., 2015,181, 449-461
  • Open access: Creative Commons BY license
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    Directing the orientational alignment of anisotropic magnetic nanoparticles using dynamic magnetic fields

    D. Hoffelner, M. Kundt, A. M. Schmidt, E. Kentzinger, P. Bender and S. Disch, Faraday Discuss., 2015, 181, 449
    DOI: 10.1039/C4FD00242C

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