| 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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Batuk, Maria
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (21/21 displayed)
- 2023Impact of anionic ordering on the iron site distribution and valence states in oxyfluoride Sr2FeO3+xF1–x (x = 0.08, 0.2) with a layered perovskite networkcitations
- 2022The crystal and defect structures of polar KBiNb 2 O 7
- 2022The crystal and defect structures of polar KBiNb2O7
- 2022Topotactic redox cycling in SrFeO 2.5+δ explored by 3D electron diffraction in different gas atmospherescitations
- 2021Determination of Spinel Content in Cycled Li1.2Ni0.13Mn0.54Co0.13O2 Using Three-Dimensional Electron Diffraction and Precession Electron Diffractioncitations
- 2021Photoresistive gas sensor based on nanocrystalline ZnO sensitized with colloidal perovskite CsPbBr₃ nanocrystalscitations
- 2020Insight into the Mechanisms of High Activity and Stability of Iridium Supported on Antimony-Doped Tin Oxide Aerogel for Anodes of Proton Exchange Membrane Water Electrolyzerscitations
- 2020Magnetic ordering in the layered Cr(II) oxide arsenides Sr₂CrO₂Cr₂As₂ and Ba₂CrO₂Cr₂As₂citations
- 2018MnFe0.5Ru0.5O3: An Above-Room-Temperature Antiferromagnetic Semiconductorcitations
- 2017Grain-boundary engineering for aging and slow-crack-growth resistant zirconiacitations
- 2017Synthesis of MAX Phases in the Zr-Ti-Al-C Systemcitations
- 2016Effect of cation dopant radius on the hydrothermal stability of tetragonal zirconia: Grain boundary segregation and oxygen vacancy annihilationcitations
- 2016Strength, toughness and aging stability of highly-translucent Y-TZP ceramics for dental restorations
- 2015Effect of selenium content of CuInSex alloy nanopowder precursors on recrystallization of printed CuInSe2 absorber layers during selenization heat treatmentcitations
- 2015Effect of the burn-out step on the microstructure of the solution-processed Cu(In,Ga)Se-2 solar cellscitations
- 2015Process variability in Cu2ZnSnSe4 solar cell devices: Electrical and structural investigationscitations
- 2015Highly-translucent, strong and aging-resistant 3Y-TZP ceramics for dental restoration by grain boundary segregationcitations
- 2014Facile Synthesis of Ba1–xKxFe2As2 Superconductors via Hydride Routecitations
- 2014Mechanical synthesis of high purity Cu-In-Se alloy nanopowder as precursor for printed CISe thin film solar cellscitations
- 2014Microstructural analysis of 9.7% efficient Cu2ZnSnSe4 thin film solar cellscitations
- 2012Artificial construction of the layered Ruddlesden–Popper Manganite La2Sr2Mn3O10by reflection high energy electron diffraction monitored pulsed laser deposition
Places of action
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article
Impact of anionic ordering on the iron site distribution and valence states in oxyfluoride Sr2FeO3+xF1–x (x = 0.08, 0.2) with a layered perovskite network
Abstract
Sr2FeO3F, an oxyfluoride compound with an n = 1 Ruddlesden–Popper structure, was identified as a potential interesting mixed ionic and electronic conductor (MIEC). The phase can be synthesized under a range of different pO2 atmospheres, leading to various degrees of fluorine for oxygen substitution and Fe4+ content. A structural investigation and thorough comparison of both argon- and air-synthesized compounds were performed by combining high-resolution X-ray and electron diffraction, high-resolution scanning transmission electron microscopy, Mössbauer spectroscopy, and DFT calculations. While the argon-synthesized phase shows a well-behaved O/F ordered structure, this study revealed that oxidation leads to averaged large-scale anionic disorder on the apical site. In the more oxidized Sr2FeO3.2F0.8 oxyfluoride, containing 20% of Fe4+, two different Fe positions can be identified with a 32%/68% occupancy (P4/nmm space group). This originates due to the presence of antiphase boundaries between ordered domains within the grains. Relations between site distortion and valence states as well as stability of apical anionic sites (O vs F) are discussed. This study paves the way for further studies on both ionic and electronic transport properties of Sr2FeO3.2F0.8 and its use in MIEC-based devices, such as solid oxide fuel cells.