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Three-dimensional imaging of magnetic domains

  • Magnetic domains have been the subject of much scientific investigation since their theoretical existence was first postulated by P.-E. Weiss over a century ago. Up to now, the three-dimensional (3D) domain structure of bulk magnets has never been observed owing to the lack of appropriate experimental methods. Domain analysis in bulk matter thus remains one of the most challenging tasks in research on magnetic materials. All current domain observation methods are limited to studying surface domains or thin magnetic films. As the properties of magnetic materials are strongly affected by their domain structure, the development of a technique capable of investigating the shape, size and distribution of individual domains in three dimensions is of great importance. Here, we show that the novel technique of Talbot-Lau neutron tomography with inverted geometry enables direct imaging of the 3D network of magnetic domains within the bulk of FeSi crystals.

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Autoren/innen:I. Manke, N. Kardjilov, R. Schäfer, A. Hilger, M. Strobl, M. Dawson, C. Grünzweig, G. Behr, Manfred P. Hentschel, C. David, Andreas Kupsch, Axel Lange, J. Banhart
Titel des übergeordneten Werkes (Englisch):Nature communications
Jahr der Erstveröffentlichung:2010
Verlag:Nature Publishing Group
Verlagsort:London, UK
Erste Seite:1
Letzte Seite:6
Freie Schlagwörter:Computed tomography; Magnetic domains; Reconstruction algorithm; Talbot-Lau neutron tomography
Verfügbarkeit des Dokuments:Physisches Exemplar in der Bibliothek der BAM vorhanden ("Hardcopy Access")
Bibliotheksstandort:Sonderstandort: Publica-Schrank
Datum der Freischaltung:19.02.2016
Referierte Publikation:Ja
Datum der Eintragung als referierte Publikation:02.12.2010