Spin Modes in Elliptical Nanorings in the Vortex State: Two-Dimensional Mapping by Micro-Focused Brillouin Light Scattering.

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Title: Spin Modes in Elliptical Nanorings in the Vortex State: Two-Dimensional Mapping by Micro-Focused Brillouin Light Scattering.
Authors: Madami, M.1, Tacchi, S.1, Gubbiotti, G.1, Carlotti, G.2, Montoncello, F.3, Capuzzo, G.3, Giovannini, L.3, Nizzoli, F.3, Tanigawa, H.4, Ono, T.4
Source: IEEE Transactions on Magnetics. Feb2010, Vol. 46 Issue 2, p199-202. 4p.
Subjects: Brillouin scattering, Electronic excitation, Magnetic pole, Magnetic fields, Experimental design, Magnetic films, Spatial systems
Abstract: Micro-focused and conventional Brillouin light scattering techniques have been exploited to investigate the spectrum of magnetic excitations (eigenmodes) of elliptical permalloy nanorings in the vortex ground state. The interpretation of the experimental data has been achieved using the dynamical matrix method. A careful comparison of the calculated frequency and profiles of magnetic modes with the experimental data, allowed us to identify the character of the different modes in terms of spatial symmetry and localization. In particular, the spatial extent of each mode was directly visualized by measurement of two-dimensional maps of the mode intensity over the ring surface. [ABSTRACT FROM AUTHOR]
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  Data: Spin Modes in Elliptical Nanorings in the Vortex State: Two-Dimensional Mapping by Micro-Focused Brillouin Light Scattering.
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  Data: <searchLink fieldCode="JN" term="%22IEEE+Transactions+on+Magnetics%22">IEEE Transactions on Magnetics</searchLink>. Feb2010, Vol. 46 Issue 2, p199-202. 4p.
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  Data: Micro-focused and conventional Brillouin light scattering techniques have been exploited to investigate the spectrum of magnetic excitations (eigenmodes) of elliptical permalloy nanorings in the vortex ground state. The interpretation of the experimental data has been achieved using the dynamical matrix method. A careful comparison of the calculated frequency and profiles of magnetic modes with the experimental data, allowed us to identify the character of the different modes in terms of spatial symmetry and localization. In particular, the spatial extent of each mode was directly visualized by measurement of two-dimensional maps of the mode intensity over the ring surface. [ABSTRACT FROM AUTHOR]
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  Data: <i>Copyright of IEEE Transactions on Magnetics is the property of IEEE and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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        Value: 10.1109/TMAG.2009.2032141
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      – SubjectFull: Electronic excitation
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      – SubjectFull: Magnetic pole
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      – SubjectFull: Magnetic fields
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      – SubjectFull: Spatial systems
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      – TitleFull: Spin Modes in Elliptical Nanorings in the Vortex State: Two-Dimensional Mapping by Micro-Focused Brillouin Light Scattering.
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              Text: Feb2010
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