Vortex nucleation and propagation in magnetic double-wedges and semi-squares for reliable quaternary storage systems

D. Sudsom, T. Blachowicz, L. Hahn, A. Ehrmann, Journal of Magnetism and Magnetic Materials 514 (2020).

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Artikel | Veröffentlicht | Englisch
Autor*in
Sudsom, Devika; Blachowicz, Tomasz; Hahn, Lothar; Ehrmann, AndreaFH Bielefeld
Abstract
Magnetic vortices belong to the possibilities to store information in magnetic structures. Understanding their nucleation and propagation is also of interest in basic research. While vortices are usually examined in particles of homogeneous material, here we give an overview of the impact of borders between two materials, i.e. iron and permalloy, on magnetization reversal and vortex formation in double-wedges as well as adjacent rectangles of different thickness. While former investigations of pure iron nanoparticles of similar dimensions revealed different magnetization reversal magnetisms without vortex, with one or two vortices, the addition of a permalloy part stabilized the magnetization reversal so that in all situations under investigation, a single vortex was observed. Our simulations underline the technological importance of such double-material structures for the preparation of nanostructures for storage devices with reliable magnetization reversal processes, stable against erroneous modifications of nanoparticle dimensions and magnetic field orientations.
Erscheinungsjahr
Zeitschriftentitel
Journal of Magnetism and Magnetic Materials
Band
514
Artikelnummer
167294
ISSN
FH-PUB-ID
669

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Sudsom, Devika ; Blachowicz, Tomasz ; Hahn, Lothar ; Ehrmann, Andrea: Vortex nucleation and propagation in magnetic double-wedges and semi-squares for reliable quaternary storage systems. In: Journal of Magnetism and Magnetic Materials Bd. 514 (2020)
Sudsom D, Blachowicz T, Hahn L, Ehrmann A. Vortex nucleation and propagation in magnetic double-wedges and semi-squares for reliable quaternary storage systems. Journal of Magnetism and Magnetic Materials. 2020;514. doi:10.1016/j.jmmm.2020.167294
Sudsom, D., Blachowicz, T., Hahn, L., & Ehrmann, A. (2020). Vortex nucleation and propagation in magnetic double-wedges and semi-squares for reliable quaternary storage systems. Journal of Magnetism and Magnetic Materials, 514. https://doi.org/10.1016/j.jmmm.2020.167294
@article{Sudsom_Blachowicz_Hahn_Ehrmann_2020, title={Vortex nucleation and propagation in magnetic double-wedges and semi-squares for reliable quaternary storage systems}, volume={514}, DOI={10.1016/j.jmmm.2020.167294}, number={167294}, journal={Journal of Magnetism and Magnetic Materials}, author={Sudsom, Devika and Blachowicz, Tomasz and Hahn, Lothar and Ehrmann, Andrea}, year={2020} }
Sudsom, Devika, Tomasz Blachowicz, Lothar Hahn, and Andrea Ehrmann. “Vortex Nucleation and Propagation in Magnetic Double-Wedges and Semi-Squares for Reliable Quaternary Storage Systems.” Journal of Magnetism and Magnetic Materials 514 (2020). https://doi.org/10.1016/j.jmmm.2020.167294.
D. Sudsom, T. Blachowicz, L. Hahn, and A. Ehrmann, “Vortex nucleation and propagation in magnetic double-wedges and semi-squares for reliable quaternary storage systems,” Journal of Magnetism and Magnetic Materials, vol. 514, 2020.
Sudsom, Devika, et al. “Vortex Nucleation and Propagation in Magnetic Double-Wedges and Semi-Squares for Reliable Quaternary Storage Systems.” Journal of Magnetism and Magnetic Materials, vol. 514, 167294, 2020, doi:10.1016/j.jmmm.2020.167294.

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