Configurational anisotropic spin waves in cross-shaped Ni 80Fe20 nanoelements

B. K. Mahato, B. Rana, R. Mandal, D. Kumar, S. Barman, Y. Fukuma, Y. Otani, A. Barman

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16 Citations (Scopus)

Abstract

Optically induced spin waves in Ni80Fe20 (permalloy) cross-shaped nanoelements are studied by time-resolved magneto-optical Kerr effect microscope. A strong anisotropy in the spin wave modes are observed with the orientation angle () of the in-plane bias magnetic field. As deviates from 0° a single resonant mode splits into a numbers of modes, while the powers of the higher frequency modes increase as increases from 0 to 45°. The lowest frequency mode shows a four-fold configurational anisotropy. The mode of a single cross remains unaffected by the magnetostatic interaction of the neighbouring elements for 0°, while the effect increases with and becomes maximum at 45°, making these elements interesting candidates as building blocks for magnonic devices.

Original languageEnglish
Article number192402
JournalApplied Physics Letters
Volume102
Issue number19
DOIs
Publication statusPublished - 2013 May 13
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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    Mahato, B. K., Rana, B., Mandal, R., Kumar, D., Barman, S., Fukuma, Y., Otani, Y., & Barman, A. (2013). Configurational anisotropic spin waves in cross-shaped Ni 80Fe20 nanoelements. Applied Physics Letters, 102(19), [192402]. https://doi.org/10.1063/1.4804990