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Imaging magnetic vortex configurations in ferromagnetic nanotubes

Wyss, M. and Mehlin, A. and Gross, B. and Buchter, A. and Farhan, A. and Buzzi, M. and Kleibert, A. and Tutuncuoglu, G. and Heimbach, F. and Fontcuberta i Morral, A. and Grundler, D. and Poggio, M.. (2017) Imaging magnetic vortex configurations in ferromagnetic nanotubes. Physical Review B, 96 (2). 024423.

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Abstract

We image the remnant magnetization configurations of CoFeB and permalloy nanotubes (NTs) using x-ray magnetic circular dichroism photoemission electron microscopy. The images provide direct evidence for flux-closure configurations, including a global vortex state, in which magnetization points circumferentially around the NT axis. Furthermore, micromagnetic simulations predict and measurements confirm that vortex states can be programmed as the equilibrium remnant magnetization configurations by reducing the ratio of the NT's length and diameter.
Faculties and Departments:05 Faculty of Science > Departement Physik > Physik > Nanotechnologie Argovia (Poggio)
UniBasel Contributors:Wyss, Marcus and Gross, Boris André and Buchter, Arne and Mehlin, Andrea and Poggio, Martino
Item Type:Article, refereed
Article Subtype:Research Article
Publisher:American Physical Society
ISSN:2469-9950
e-ISSN:2469-9969
Note:Publication type according to Uni Basel Research Database: Journal article
Language:English
Identification Number:
Last Modified:27 Jul 2018 13:31
Deposited On:20 Sep 2017 11:19

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