| 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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Liedke, Maciej Oskar
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (9/9 displayed)
- 2024Evolution of point defects in pulsed-laser-melted Ge<sub>1-x </sub>Sn <sub>x</sub> probed by positron annihilation lifetime spectroscopycitations
- 2024Controlling Magneto-Ionics by Defect Engineering Through Light Ion Implantationcitations
- 2024Positron annihilation analysis of nanopores and growth mechanism of oblique angle evaporated TiO2 and SiO2 thin films and multilayers
- 2022Defect Nanostructure and its Impact on Magnetism of α-Cr2O3 thin filmscitations
- 2022Flexomagnetism and vertically graded Néel temperature of antiferromagnetic Cr2O3 thin films
- 2022Unravelling the Origin of Ultra‐Low Conductivity in SrTiO$_3$ Thin Films: Sr Vacancies and Ti on A‐Sites Cause Fermi Level Pinningcitations
- 2022The impact of Mn nonstoichiometry on the oxygen mass transport properties of La Sr Mn O thin filmscitations
- 2017Purely antiferromagnetic magnetoelectric random access memory
- 2005Magnetic anisotropy and domain patterning of amorphous films by He-ion irradiationcitations
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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>