Imaging Stray Magnetic Field of Individual Ferromagnetic Nanotubes
(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.
(Less)
- author
- organization
- publishing date
- 2018-02-14
- 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 (ACS)
- external identifiers
-
- pmid:29293345
- 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
- 2024-03-01 15:12:24
@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}}, keywords = {{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 (ACS)}}, series = {{Nano Letters}}, title = {{Imaging Stray Magnetic Field of Individual Ferromagnetic Nanotubes}}, url = {{http://dx.doi.org/10.1021/acs.nanolett.7b04386}}, doi = {{10.1021/acs.nanolett.7b04386}}, volume = {{18}}, year = {{2018}}, }