Four-state magnetic configuration in a tri-layer asymmetric ring - Archive ouverte HAL
Article Dans Une Revue Applied Physics Letters Année : 2015

Four-state magnetic configuration in a tri-layer asymmetric ring

Résumé

Ring-shaped multilayered sub-micron dots have potential for the development of non-volatile multi-bit devices. We show that a Co/Cu/FeNi asymmetric ring can take four distinct remanent magnetic states, each one stabilized by applying a magnetic field pulse along one of four in-plane orthogonal directions. We use element selective x-ray holography for imaging the Co magnetic configuration following a magnetic pulse. Micro-magnetic simulations support our experimental findings; they also provide an estimate of the system magnetization dynamics, setting out the conditions for further time-resolved experiments.
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Dates et versions

hal-01443654 , version 1 (23-01-2017)

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Horia Popescu, Franck Fortuna, Renaud Delaunay, Carlo Spezzani, Victor López-Flores, et al.. Four-state magnetic configuration in a tri-layer asymmetric ring. Applied Physics Letters, 2015, 107, pp.202404. ⟨10.1063/1.4936155⟩. ⟨hal-01443654⟩
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