| 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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Chiabrera, Francesco Maria
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (11/11 displayed)
- 2024Operando Electron Microscopy and Impedance Analysis of Solid Oxide Electrolysis and Fuel Cellscitations
- 2023Reconstruction of Low Dimensional Electronic States by Altering the Chemical Arrangement at the SrTiO3 Surfacecitations
- 2022Ion Intercalation in Lanthanum Strontium Ferrite for Aqueous Electrochemical Energy Storage Devicescitations
- 2022The impact of Mn nonstoichiometry on the oxygen mass transport properties of La Sr Mn O thin filmscitations
- 2022Freestanding Perovskite Oxide Filmscitations
- 2022Defect-induced magnetism in homoepitaxial SrTiO3citations
- 2022Defect-induced magnetism in homoepitaxial SrTiO3citations
- 2021Direct Measurement of Oxygen Mass Transport at the Nanoscalecitations
- 2021A high-entropy manganite in an ordered nanocomposite for long-term application in solid oxide cells
- 2019Interface Engineering in Mixed Ionic Electronic Conductor Thin Films for Solid State Devices
- 2019Engineering Transport in Manganites by Tuning Local Nonstoichiometry in Grain Boundariescitations
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article
The impact of Mn nonstoichiometry on the oxygen mass transport properties of La Sr Mn O thin films
Abstract
<jats:title>Abstract</jats:title><jats:p>Oxygen mass transport in perovskite oxides is relevant for a variety of energy and information technologies. In oxide thin films, cation nonstoichiometry is often found but its impact on the oxygen transport properties is not well understood. Here, we used oxygen isotope exchange depth profile technique coupled with secondary ion mass spectrometry to study oxygen mass transport and the defect compensation mechanism of Mn-deficient La<jats:sub>0.8</jats:sub>Sr<jats:sub>0.2</jats:sub>Mn<jats:italic><jats:sub>y</jats:sub></jats:italic>O<jats:sub>3±<jats:italic>δ</jats:italic></jats:sub> epitaxial thin films. Oxygen diffusivity and surface exchange coefficients were observed to be consistent with literature measurements and to be independent on the degree of Mn deficiency in the layers. Defect chemistry modeling, together with a collection of different experimental techniques, suggests that the Mn-deficiency is mainly compensated by the formation of <jats:inline-formula><jats:tex-math><?CDATA ${{La}}_{{{Mn}}}^$?></jats:tex-math><mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"><mml:msubsup><mml:mrow><mml:mtext>La</mml:mtext></mml:mrow><mml:mrow><mml:mrow><mml:mtext>Mn</mml:mtext></mml:mrow></mml:mrow><mml:mo>×</mml:mo></mml:msubsup></mml:math><jats:inline-graphic xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="jpenergyac98dfieqn1.gif" xlink:type="simple" /></jats:inline-formula> antisite defects. The results highlight the importance of antisite defects in perovskite thin films for mitigating cationic nonstoichiometry effects on oxygen mass transport properties.</jats:p>