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- W1973462641 abstract "We demonstrate a novel method allowing the study of the magnetic state dynamics of a single nanoparticle by means of electron transport measurements. Elliptical 550 nm×240 nm permalloy nanoparticles are wired with non-magnetic leads for magnetotransport measurements in the presence of a radio frequency (RF) field. Their resistance exhibits sharp jumps due to the anisotropic magnetoresistance (AMR) even at room temperature. An RF field induces DC voltage across the nanoparticle, which can be partially depleted at a certain RF frequency when a magnetic vortex core resonance is present. An application of an additional DC magnetic field eliminates the vortex and reinstates the unperturbed DC voltage level. The vortex core resonance frequencies are found and the smallest resonance widths are estimated to be less than 6 MHz." @default.
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- W1973462641 date "2008-01-01" @default.
- W1973462641 modified "2023-10-16" @default.
- W1973462641 title "The dynamics of magnetic vortex states in a single permalloy nanoparticle" @default.
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- W1973462641 doi "https://doi.org/10.1016/j.jmmm.2007.05.018" @default.
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