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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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Joly, Yves
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (16/16 displayed)
- 2022Charge Reorganization at the Adsorbate Covered Electrode Surface Probed through in Situ Resonant X-ray Diffraction Combined with ab Initio Modelingcitations
- 2022Charge reorganization at the adsorbate covered electrode surface probed through in-situ resonant x-ray diffraction combined with ab initio modellingcitations
- 2022In situ resonant x-ray scattering at the French “CRG-IF” beamline at ESRF
- 2022In situ resonant x-ray scattering at the French “CRG-IF” beamline at ESRF
- 2020Static magnetic proximity effects and spin Hall magnetoresistance in Pt/Y3Fe5O12 and inverted Y3Fe5O12/Pt bilayerscitations
- 2020Magnetic field induced structural changes in magnetite observed by resonant x-ray diffraction and Mössbauer spectroscopycitations
- 2020Static magnetic proximity effects and spin Hall magnetoresistance in Pt/Y$_{3}$Fe$_{5}$O$_{12}$ and inverted Y$_{3}$Fe$_{5}$O$_{12}$/Pt bilayerscitations
- 2019Epitaxial growth and structure of cobalt ferrite thin films with large inversion parameter on Ag(001)citations
- 2019Epitaxial growth and structure of cobalt ferrite thin films with large inversion parameter on Ag(001)citations
- 2017Temperature Variation of Magnetic Anisotropy in Pt / Co / AlO x Trilayerscitations
- 2016Determination of the cationic distribution in oxidic thin films by resonant X-ray diffraction: the magnetoelectric compound Ga2-xFexO3. Supporting information
- 2015Core–shell-like Au sub-nanometer clusters in Er-implanted silicacitations
- 2012X-ray resonant magnetic reflectivity of stratified magnetic structures: Eigenwave formalism and application to a W/Fe/W trilayercitations
- 2012Stability of the local Ni site distortions across pressure-induced metallization in YNiO3citations
- 2007EXAFS studies of the local atomic structure of the lead-free piezoelectric ceramics KxNa1 xNbO3 over the temperature range 10-1023 Kcitations
- 2007Phase transitions in lead-free piezoelectric ceramics: Study of local atomic structurecitations
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article
Epitaxial growth and structure of cobalt ferrite thin films with large inversion parameter on Ag(001)
Abstract
<jats:p>Cobalt ferrite ultrathin films with the inverse spinel structure are among the best candidates for spin filtering at room temperature. High-quality epitaxial CoFe<jats:sub>2</jats:sub>O<jats:sub>4</jats:sub> films about 4 nm thick have been fabricated on Ag(001) following a three-step method: an ultrathin metallic CoFe<jats:sub>2</jats:sub> alloy was first grown in coherent epitaxy on the substrate and then treated twice with O<jats:sub>2</jats:sub>, first at room temperature and then during annealing. The epitaxial orientation and the surface, interface and film structure were resolved using a combination of low-energy electron diffraction, scanning tunnelling microscopy, Auger electron spectroscopy and <jats:italic>in situ</jats:italic> grazing-incidence X-ray diffraction. A slight tetragonal distortion was observed, which should drive the easy magnetization axis in-plane due to the large magneto-elastic coupling of such a material. The so-called inversion parameter, <jats:italic>i.e.</jats:italic> the Co fraction occupying octahedral sites in the ferrite spinel structure, is a key element for its spin-dependent electronic gap. It was obtained through <jats:italic>in situ</jats:italic> resonant X-ray diffraction measurements collected at both the Co and Fe <jats:italic>K</jats:italic> edges. The data analysis was performed using <jats:italic>FDMNES</jats:italic>, an <jats:italic>ab initio</jats:italic> program already extensively used to simulate X-ray absorption spectroscopy, and shows that the Co ions are predominantly located on octahedral sites with an inversion parameter of 0.88 (5). <jats:italic>Ex situ</jats:italic> X-ray photoelectron spectroscopy gives an estimation in accordance with the values obtained through diffraction analysis.</jats:p>