| 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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Zhang, Zaoli
Austrian Academy of Sciences
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (11/11 displayed)
- 2024Structural Characterization of La0.6Sr0.4CoO3-δ Thin Films Grown on (100)-, (110)-, and (111)-Oriented La0.95Sr0.05Ga0.95Mg0.05O3-δ
- 2023Large mechanical properties enhancement in ceramics through vacancy-mediated unit cell disturbancecitations
- 2023Short-range order patterns in Mg66Zn29Ca5 metallic glasscitations
- 2022Ca Solubility in a BiFeO3-Based System with a Secondary Bi2O3 Phase on a Nanoscale.
- 2022Atomistic mechanisms underlying plasticity and crack growth in ceramics : a case study of AlN/TiN superlatticescitations
- 2021Strain-induced structure and oxygen transport interactions in epitaxial La 0.6 Sr 0.4 CoO 3− δ thin films
- 2021Copper and its effects on microstructure and correlated tensile properties of super duplex stainless steelscitations
- 2020Study on Ca Segregation toward an Epitaxial Interface between Bismuth Ferrite and Strontium Titanatecitations
- 2020Ca segregation towards an in-plane compressive strain Bismuth Ferrite – Strontium Titanate interface
- 2018Microstructural and texture evolution of copper-(chromium, molybdenum, tungsten) composites deformed by high-pressure-torsioncitations
- 2014Evolution of the $omega$${_o}$ phase in a $beta$-stabilized multi-phase TiAl alloy and its effect on hardnesscitations
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article
Study on Ca Segregation toward an Epitaxial Interface between Bismuth Ferrite and Strontium Titanate
Abstract
<p>Segregation is a crucial phenomenon, which has to be considered in functional material design. Segregation processes in perovskite oxides have been the subject of ongoing scientific interest, since they can lead to a modification of properties and a loss of functionality. Many studies in oxide thin films have focused on segregation toward the surface using a variety of surface-sensitive analysis techniques. In contrast, here we report a Ca segregation toward an in-plane compressively strained heterostructure interface in a Ca- and Mn-codoped bismuth ferrite film. We are using advanced transmission electron microscopy techniques, X-ray photoelectron spectroscopy, and density functional theory (DFT) calculations. Ca segregation is found to trigger atomic and electronic structure changes at the interface. This includes the reduction of the interface strain according to the Ca concentration gradient, interplanar spacing variations, and oxygen vacancies at the interface. The experimental results are supported by DFT calculations, which explore two segregation scenarios, i.e., one without oxygen vacancies and Fe oxidation from 3+ to 4+ and one with vacancies for charge compensation. Comparison with electron energy loss spectroscopy (EELS) measurements confirms the second segregation scenario with vacancy formation. The findings contribute to the understanding of segregation and indicate promising effects of a Ca-rich buffer layer in this heterostructure system.</p>