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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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Lari, Leonardo
University of York
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (7/7 displayed)
- 2024Origin of reduced magnetization and domain formation in small magnetite nanoparticlescitations
- 2022Environmental STEM Study of the Oxidation Mechanism for Iron and Iron Carbide Nanoparticlescitations
- 2017Origin of reduced magnetization and domain formation in small magnetite nanoparticlescitations
- 2017Spatially resolved variations in reflectivity across iron oxide thin filmscitations
- 2016Polar Spinel-Perovskite Interfacescitations
- 2016Atomic and electronic structure of twin growth defects in magnetitecitations
- 2010Electron microscopy of AlGaN-based multilayers for UV laser devices
Places of action
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article
Atomic and electronic structure of twin growth defects in magnetite
Abstract
We report the existence of a stable twin defect in Fe3O4 thin films. By using aberration corrected scanning transmission electron microscopy and spectroscopy the atomic structure of the twin boundary has been determined. The boundary is confined to the (111) growth plane and it is non-stoichiometric due to a missing Fe octahedral plane. By first principles calculations we show that the local atomic structural configuration of the twin boundary does not change the nature of the superexchange interactions between the two Fe sublattices across the twin grain boundary. Besides decreasing the half-metallic band gap at the boundary the altered atomic stacking at the boundary does not change the overall ferromagnetic (FM) coupling between the grains.