| People | Locations | Statistics |
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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Nolting, Frithjof
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (9/9 displayed)
- 2024Direct imaging of the magnetoelectric coupling in multiferroic BaTiO3/La0.9Ba0.1MnO3citations
- 2020Single femtosecond laser pulse excitation of individual cobalt nanoparticlescitations
- 2016Giant reversible anisotropy changes at room temperature in a (La,Sr)MnO<sub>3</sub>/Pb(Mg,Nb,Ti)O<sub>3</sub> magneto-electric heterostructurecitations
- 2014Direct observation of magnetic metastability in individual iron nanoparticlescitations
- 2010In situ contacting and current-injection into samples in photoemission electron microscopescitations
- 2010Direct determination of large Spin-Torque nonadiabaticity in Vortex Core Dynamicscitations
- 2008Direct imaging of current-induced domain wall motion in CoFeB structurescitations
- 2006Magnetization reversal in cobalt antidot arrayscitations
- 2004Head-to-head domain-wall phase diagram in mesoscopic ring magnetscitations
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article
Direct imaging of current-induced domain wall motion in CoFeB structures
Abstract
By direct x-ray photoemission electron microscopy imaging, we probe current-induced domain wall motion in 20 nm thick CoFeB wires. We observe transverse walls for all wire widths up to 1500 nm as a consequence of the small saturation magnetization of the material. High critical current densities above 1x10 12 A/m2 for wall displacement due to the spin transfer torque effect are found. The critical current densities jc increase further with decreasing wire width indicating that jc is governed by extrinsic pinning due to edge defects. In addition to wall displacements, we observe wall transformations to energetically favorable wall types due to heating. Owing to the high Curie temperature though, the sample temperature stays below the Curie temperature even for the highest current densities where structural damage sets in. ; published