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Magnetic antivortex-core reversal by rotating magnetic fields

Thomas Kamionka, Michael Martens, Kang Wei Chou, André Drews, Tolek Tyliszczak, Hermann Stoll, Bartel Van Waeyenberge UGent and Guido Meier (2011) PHYSICAL REVIEW B. 83(22).
abstract
Magnetic vortices and antivortices are usually observed coexisting in cross-tie walls within ferromagnetic thin films. An antivortex can be isolated by utilizing the shape anisotropy. The isolation offers the possibility to investigate its fundamental dynamics as a two-dimensional oscillator in a confining potential. Hitherto, the gyration mode of vortices and its excitation has been studied intensely. Here, a detailed investigation of the coupling of an antivortex to in-plane rotating magnetic fields is presented. The resonant response is imaged by time-resolved scanning transmission x-ray microscopy to determine the amplitude as well as the phase of the gyration. The experimental results are compared with the analytical model of a two-dimensional harmonic oscillator derived from the Thiele equation. As a cause for deviations from the model, a buckled energy landscape due to local defects is discussed.
Please use this url to cite or link to this publication:
author
organization
year
type
journalArticle (original)
publication status
published
subject
keyword
PERMALLOY
journal title
PHYSICAL REVIEW B
Phys. Rev. B
volume
83
issue
22
article_number
224422
pages
6 pages
Web of Science type
Article
Web of Science id
000292127800008
JCR category
PHYSICS, CONDENSED MATTER
JCR impact factor
3.691 (2011)
JCR rank
13/68 (2011)
JCR quartile
1 (2011)
ISSN
1098-0121
DOI
10.1103/PhysRevB.83.224422
language
English
UGent publication?
yes
classification
A1
copyright statement
I have transferred the copyright for this publication to the publisher
id
2917061
handle
http://hdl.handle.net/1854/LU-2917061
date created
2012-06-22 17:23:03
date last changed
2012-06-29 11:42:53
@article{2917061,
  abstract     = {Magnetic vortices and antivortices are usually observed coexisting in cross-tie walls within ferromagnetic thin films. An antivortex can be isolated by utilizing the shape anisotropy. The isolation offers the possibility to investigate its fundamental dynamics as a two-dimensional oscillator in a confining potential. Hitherto, the gyration mode of vortices and its excitation has been studied intensely. Here, a detailed investigation of the coupling of an antivortex to in-plane rotating magnetic fields is presented. The resonant response is imaged by time-resolved scanning transmission x-ray microscopy to determine the amplitude as well as the phase of the gyration. The experimental results are compared with the analytical model of a two-dimensional harmonic oscillator derived from the Thiele equation. As a cause for deviations from the model, a buckled energy landscape due to local defects is discussed.},
  articleno    = {224422},
  author       = {Kamionka, Thomas and Martens, Michael and Chou, Kang Wei and Drews, Andr{\'e} and Tyliszczak, Tolek and Stoll, Hermann and Van Waeyenberge, Bartel and Meier, Guido},
  issn         = {1098-0121},
  journal      = {PHYSICAL REVIEW B},
  keyword      = {PERMALLOY},
  language     = {eng},
  number       = {22},
  pages        = {6},
  title        = {Magnetic antivortex-core reversal by rotating magnetic fields},
  url          = {http://dx.doi.org/10.1103/PhysRevB.83.224422},
  volume       = {83},
  year         = {2011},
}

Chicago
Kamionka, Thomas, Michael Martens, Kang Wei Chou, André Drews, Tolek Tyliszczak, Hermann Stoll, Bartel Van Waeyenberge, and Guido Meier. 2011. “Magnetic Antivortex-core Reversal by Rotating Magnetic Fields.” Physical Review B 83 (22).
APA
Kamionka, T., Martens, M., Chou, K. W., Drews, A., Tyliszczak, T., Stoll, H., Van Waeyenberge, B., et al. (2011). Magnetic antivortex-core reversal by rotating magnetic fields. PHYSICAL REVIEW B, 83(22).
Vancouver
1.
Kamionka T, Martens M, Chou KW, Drews A, Tyliszczak T, Stoll H, et al. Magnetic antivortex-core reversal by rotating magnetic fields. PHYSICAL REVIEW B. 2011;83(22).
MLA
Kamionka, Thomas, Michael Martens, Kang Wei Chou, et al. “Magnetic Antivortex-core Reversal by Rotating Magnetic Fields.” PHYSICAL REVIEW B 83.22 (2011): n. pag. Print.