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Imaging Stray Magnetic Field of Individual Ferromagnetic Nanotubes

Vasyukov, D.; Ceccarelli, L.; Wyss, M.; Gross, B.; Schwarb, A.; Mehlin, A.; Rossi, N.; Tütüncüoglu, G.; Heimbach, F. and Zamani, R. R. LU , et al. (2018) In Nano Letters 18(2). p.964-970
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... (More)

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.

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organization
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type
Contribution to journal
publication status
published
subject
keywords
magnetic nanotubes, magnetic tubular architectures, Nanomagnetism, nanoscale magnetic imaging, SQUID-on-tip, superconducting quantum interference device
in
Nano Letters
volume
18
issue
2
pages
7 pages
publisher
The American Chemical Society
external identifiers
  • scopus:85042126250
ISSN
1530-6984
DOI
10.1021/acs.nanolett.7b04386
language
English
LU publication?
yes
id
aaf4755d-3169-4279-bb29-445568e64415
date added to LUP
2018-03-06 12:06:05
date last changed
2018-05-29 12:06:28
@article{aaf4755d-3169-4279-bb29-445568e64415,
  abstract     = {<p>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.</p>},
  author       = {Vasyukov, D. and Ceccarelli, L. and Wyss, M. and Gross, B. and Schwarb, A. and Mehlin, A. and Rossi, N. and Tütüncüoglu, G. and Heimbach, F. and Zamani, R. R. and Kovács, A. and Fontcuberta I Morral, A. and Grundler, D. and Poggio, M.},
  issn         = {1530-6984},
  keyword      = {magnetic nanotubes,magnetic tubular architectures,Nanomagnetism,nanoscale magnetic imaging,SQUID-on-tip,superconducting quantum interference device},
  language     = {eng},
  month        = {02},
  number       = {2},
  pages        = {964--970},
  publisher    = {The American Chemical Society},
  series       = {Nano Letters},
  title        = {Imaging Stray Magnetic Field of Individual Ferromagnetic Nanotubes},
  url          = {http://dx.doi.org/10.1021/acs.nanolett.7b04386},
  volume       = {18},
  year         = {2018},
}