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Imaging Stray Magnetic Field of Individual Ferromagnetic Nanotubes

Vasyukov, Denis and Ceccarelli, Lorenzo and Wyss, Marcus and Gross, Boris and Schwarb, Alexander and Mehlin, Andrea and Rossi, Nicola and Tütüncüoglu, Gözde and Heimbach, Florian and Zamani, Reza and Kovács, Andras and Fontcuberta i Morral, Anna and Grundler, Dirk and Poggio, Martino. (2018) Imaging Stray Magnetic Field of Individual Ferromagnetic Nanotubes. Nano Letters, 18 (2). pp. 964-970.

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Official URL: https://edoc.unibas.ch/63503/

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Abstract

We use a scanning nanometer-scale superconducting quantum interference device to map the stray magnetic field produced by individual ferromagnetic nanotubes (FNTs) as a function of applied magnetic field. The images are taken as each FNT is led through magnetic reversal and are compared with micromagnetic simulations, which correspond to specific magnetization configurations. In magnetic fields applied perpendicular to the FNT long axis, their magnetization appears to reverse through vortex states, that is, configurations with vortex end domains or in the case of a sufficiently short FNT with a single global vortex. Geometrical imperfections in the samples and the resulting distortion of idealized magnetization configurations influence the measured stray-field patterns.
Faculties and Departments:05 Faculty of Science > Departement Physik > Physik > Nanotechnologie Argovia (Poggio)
UniBasel Contributors:Vasyukov, Denis and Ceccarelli, Lorenzo and Wyss, Marcus and Gross, Boris André and Schwarb, Alexander and Mehlin, Andrea and Rossi, Nicola and Poggio, Martino
Item Type:Article, refereed
Article Subtype:Research Article
Publisher:American Chemical Society
ISSN:1530-6984
e-ISSN:1530-6992
Note:Publication type according to Uni Basel Research Database: Journal article -- The final publication is available at American Chemical Society see DOI link
Language:English
Identification Number:
Last Modified:27 Jul 2018 12:15
Deposited On:23 Apr 2018 07:25

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