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- W1579787588 abstract "A direct and systematic investigation of the magnetization dynamics in individual circular Ni80Fe20 disk of diameter (D) in the range from 300 nm to 1 μm measured using micro-focused Brillouin Light Scattering (μ-BLS) spectroscopy is presented. At high field, when the disks are in a single domain state, the resonance frequency of the uniform center mode is observed to reduce with reducing disk’s diameter. For D = 300 nm, additional edge and end-domains resonant modes are observed due to size effects. At low field, when the disks are in a vortex state, a systematic increase of resonant frequency of magnetostatic modes in a vortex state with the square root of the disks’ aspect ratio (thickness divided by radius) is observed. Such dependence diminishes for disks with larger aspect ratio due to an increasing exchange energy contribution. Micromagnetic simulations are in excellent agreement with the experiments." @default.
- W1579787588 created "2016-06-24" @default.
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- W1579787588 date "2015-09-01" @default.
- W1579787588 modified "2023-10-16" @default.
- W1579787588 title "Size-dependent magnetization dynamics in individual Ni<sub>80</sub>Fe<sub>20</sub> disk using micro-focused Brillouin Light Scattering spectroscopy" @default.
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- W1579787588 doi "https://doi.org/10.1063/1.4930836" @default.
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