Vortex dynamics in Permalloy disks with artificial defects: Suppression of the gyrotropic mode

K. Kuepper; L. Bischoff; Ch Akhmadaliev; J. Fassbender; H. Stoll; K. W. Chou; A. Puzic; K. Fauth; D. Dolgos; G. Schütz; B. Van Waeyenberge; T. Tyliszczak; I. Neudecker; G. Woltersdorf; C. H. Back

doi:10.1063/1.2437710

Vortex dynamics in Permalloy disks with artificial defects: Suppression of the gyrotropic mode

K. Kuepper
, L. Bischoff
, Ch Akhmadaliev
, J. Fassbender
, H. Stoll
, K. W. Chou
, A. Puzic
, K. Fauth
, D. Dolgos
, G. Schütz
, B. Van Waeyenberge
, T. Tyliszczak
, I. Neudecker
, G. Woltersdorf
, C. H. Back

HelmholtzZentrum Dresden-Rossendorf
Max Planck Institute for Intelligent Systems
Ghent University
Lawrence Berkeley National Laboratory
University of Regensburg

Research output: Contribution to journal › Article › peer-review

35 Scopus citations

Abstract

The dynamics of magnetic vortices in thin Permalloy disks having artificial defects in the form of small holes at different locations within the disk has been investigated by means of frequency-domain spatially resolved ferromagnetic resonance. It is found that the vortex can be effectively captured by such a defect. Consequently the commonly observed gyrotropic vortex motion in an applied microwave field of 1 mT is suppressed. However, if in addition a static magnetic field of at least 4.3 mT is applied, the vortex core is nucleated from the artificial defect and a modified gyrotropic motion starts again.

Original language	English
Article number	062506
Journal	Applied Physics Letters
Volume	90
Issue number	6
DOIs	https://doi.org/10.1063/1.2437710
State	Published - 2007
Externally published	Yes

Access to Document

10.1063/1.2437710

Cite this

Kuepper, K., Bischoff, L., Akhmadaliev, C., Fassbender, J., Stoll, H., Chou, K. W., Puzic, A., Fauth, K., Dolgos, D., Schütz, G., Van Waeyenberge, B., Tyliszczak, T., Neudecker, I., Woltersdorf, G., & Back, C. H. (2007). Vortex dynamics in Permalloy disks with artificial defects: Suppression of the gyrotropic mode. Applied Physics Letters, 90(6), Article 062506. https://doi.org/10.1063/1.2437710

@article{b5785ed860b14465be097b9cc784ef9a,

title = "Vortex dynamics in Permalloy disks with artificial defects: Suppression of the gyrotropic mode",

abstract = "The dynamics of magnetic vortices in thin Permalloy disks having artificial defects in the form of small holes at different locations within the disk has been investigated by means of frequency-domain spatially resolved ferromagnetic resonance. It is found that the vortex can be effectively captured by such a defect. Consequently the commonly observed gyrotropic vortex motion in an applied microwave field of 1 mT is suppressed. However, if in addition a static magnetic field of at least 4.3 mT is applied, the vortex core is nucleated from the artificial defect and a modified gyrotropic motion starts again.",

author = "K. Kuepper and L. Bischoff and Ch Akhmadaliev and J. Fassbender and H. Stoll and Chou, \{K. W.\} and A. Puzic and K. Fauth and D. Dolgos and G. Sch{\"u}tz and \{Van Waeyenberge\}, B. and T. Tyliszczak and I. Neudecker and G. Woltersdorf and Back, \{C. H.\}",

note = "Funding Information: Most of the work has been performed at the Advanced Light Source which is supported by the U.S. Department of Energy under Contract No. DE-AC03-76SF00098.",

year = "2007",

doi = "10.1063/1.2437710",

language = "English",

volume = "90",

journal = "Applied Physics Letters",

issn = "0003-6951",

publisher = "American Institute of Physics",

number = "6",

}

Kuepper, K, Bischoff, L, Akhmadaliev, C, Fassbender, J, Stoll, H, Chou, KW, Puzic, A, Fauth, K, Dolgos, D, Schütz, G, Van Waeyenberge, B, Tyliszczak, T, Neudecker, I, Woltersdorf, G & Back, CH 2007, 'Vortex dynamics in Permalloy disks with artificial defects: Suppression of the gyrotropic mode', Applied Physics Letters, vol. 90, no. 6, 062506. https://doi.org/10.1063/1.2437710

TY - JOUR

T1 - Vortex dynamics in Permalloy disks with artificial defects

T2 - Suppression of the gyrotropic mode

AU - Kuepper, K.

AU - Bischoff, L.

AU - Akhmadaliev, Ch

AU - Fassbender, J.

AU - Stoll, H.

AU - Chou, K. W.

AU - Puzic, A.

AU - Fauth, K.

AU - Dolgos, D.

AU - Schütz, G.

AU - Van Waeyenberge, B.

AU - Tyliszczak, T.

AU - Neudecker, I.

AU - Woltersdorf, G.

AU - Back, C. H.

N1 - Funding Information: Most of the work has been performed at the Advanced Light Source which is supported by the U.S. Department of Energy under Contract No. DE-AC03-76SF00098.

PY - 2007

Y1 - 2007

N2 - The dynamics of magnetic vortices in thin Permalloy disks having artificial defects in the form of small holes at different locations within the disk has been investigated by means of frequency-domain spatially resolved ferromagnetic resonance. It is found that the vortex can be effectively captured by such a defect. Consequently the commonly observed gyrotropic vortex motion in an applied microwave field of 1 mT is suppressed. However, if in addition a static magnetic field of at least 4.3 mT is applied, the vortex core is nucleated from the artificial defect and a modified gyrotropic motion starts again.

AB - The dynamics of magnetic vortices in thin Permalloy disks having artificial defects in the form of small holes at different locations within the disk has been investigated by means of frequency-domain spatially resolved ferromagnetic resonance. It is found that the vortex can be effectively captured by such a defect. Consequently the commonly observed gyrotropic vortex motion in an applied microwave field of 1 mT is suppressed. However, if in addition a static magnetic field of at least 4.3 mT is applied, the vortex core is nucleated from the artificial defect and a modified gyrotropic motion starts again.

UR - https://www.scopus.com/pages/publications/33846968112

U2 - 10.1063/1.2437710

DO - 10.1063/1.2437710

M3 - Article

AN - SCOPUS:33846968112

SN - 0003-6951

VL - 90

JO - Applied Physics Letters

JF - Applied Physics Letters

IS - 6

M1 - 062506

ER -

Vortex dynamics in Permalloy disks with artificial defects: Suppression of the gyrotropic mode

Abstract

Access to Document

Other files and links

Fingerprint

Cite this