| 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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Knez, Daniel
Graz University of Technology
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (48/48 displayed)
- 2024Nanoscale, surface-confined phase separation by electron beam induced oxidationcitations
- 2024Three-dimensional distribution of individual atoms in the channels of beryl
- 2024Three-dimensional distribution of individual atoms in the channels of berylcitations
- 2024Phase Transitions and Ion Transport in Lithium Iron Phosphate by Atomic‐Scale Analysis to Elucidate Insertion and Extraction Processes in Li‐Ion Batteriescitations
- 2024Challenges and advances regarding LiVPO4: From HR-STEM & EELS to novel scanning diffraction techniques
- 2024STEM exploration of 2DEG at TiO2/LaAlO3 interface
- 2024Gas-Phase Synthesis of Iron Silicide Nanostructures Using a Single-Source Precursorcitations
- 2024Pulsed Laser Deposition using high-power Nd:YAG laser source operating at its first harmonics
- 2024Atom by atom analysis of defect structures in doped STO
- 2023A Guideline to Mitigate Interfacial Degradation Processes in Solid‐State Batteries Caused by Cross Diffusioncitations
- 20232D and 3D STEM Imaging and Spectroscopy: Applications and Perspectives in View of Novel STEM Infrastructure
- 2023Visualizing cellulose chains with cryo scanning transmission electron microscopy
- 2023Phase analysis of (Li)FePO4 by selected area electron diffraction and integrated differential phase contrast imaging
- 2022Phase Analysis of (Li)FePO4 by Selected Area Electron Diffraction in Transmission Electron Microscopy
- 2022Oxygen-Driven Metal–Insulator Transition in SrNbO 3 Thin Films Probed by Infrared Spectroscopycitations
- 2022Oxygen-Driven Metal–Insulator Transition in SrNbO3 Thin Films Probed by Infrared Spectroscopycitations
- 2022Vanadium and Manganese Carbonyls as Precursors in Electron-Induced and Thermal Deposition Processes
- 2022Orbital mapping of the LaAlO3-TiO2 interface by STEM-EELS
- 2022Quantifying Ordering Phenomena at the Atomic Scale in Rare Earth Oxide Ceramics via EELS Elemental Mapping
- 2022In Situ Study of Nanoporosity Evolution during Dealloying AgAu and CoPd by Grazing-Incidence Small-Angle X-ray Scatteringcitations
- 2022In Situ Study of Nanoporosity Evolution during Dealloying AgAu and CoPd by Grazing-Incidence Small-Angle X-ray Scatteringcitations
- 2022Field induced oxygen vacancy migration in anatase thin films studied by in situ biasing TEM
- 2022Precursors for Direct-Write Nanofabrication with Electrons
- 2022Challenges in the characterization of complex nanomaterials with analytical STEM
- 2022Mixed-metal nanoparticlescitations
- 2022Focused Ion Beam vs Focused Electron Beam Deposition of Cobalt Silicide Nanostructures Using Single-Source Precursorscitations
- 2022A Lithium-Silicon Microbattery with Anode and Housing Directly Made from Semiconductor Grade Monocrystalline Sicitations
- 2021Post-processing paths for orbital mapping of rutile by STEM-EELS
- 2021Automatic indexing of two-dimensional patterns in reciprocal space
- 2021Pulsed laser deposition of oxide and metallic thin films by means of Nd:YAG laser source operating at its 1st harmonicscitations
- 2021The Impact of High-Tension on the Orbital Mapping of Rutile by STEM-EELS
- 2021Spectroscopic STEM imaging in 2D and 3D
- 2020Helium droplet assisted synthesis of plasmonic Ag@ZnO core@shell nanoparticlescitations
- 2020Tuning optical absorption of anatase thin lms across the visible/near-infrared spectral regioncitations
- 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
- 2020Unveiling Oxygen Vacancy Superstructures in Reduced Anatase Thin Filmscitations
- 2020Ultrashort XUV pulse absorption spectroscopy of partially oxidized cobalt nanoparticlescitations
- 2019Ultra-thin h-BN substrates for nanoscale plasmon spectroscopycitations
- 2019On the passivation of iron particles at the nanoscalecitations
- 2019The impact of swift electrons on the segregation of Ni-Au nanoalloyscitations
- 2019Effects of the Core Location on the Structural Stability of Ni-Au Core-Shell Nanoparticlescitations
- 2019Atomic Structure Analysis of a Second Order Ruddlesden-Popper Ferrite-a High Resolution STEM Study
- 2018Stability of Core-Shell Nanoparticles for Catalysis at Elevated Temperaturescitations
- 2017Microstructure evolution and mechanical properties of hot deformed Mg9Al1Zn samples containing a friction stir processed zonecitations
- 2017Thermally induced breakup of metallic nanowirescitations
- 2017Inclusions in Si whiskers grown by Ni metal induced lateral crystallizationcitations
- 2016Formation of bimetallic clusters in superfluid helium nanodroplets analysed by atomic resolution electron tomography
Places of action
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document
Atomic Structure Analysis of a Second Order Ruddlesden-Popper Ferrite-a High Resolution STEM Study
Abstract
New energy materials based on mixed proton-, oxygen ion- and electron-conducting ceramics (triple conducting oxides, TCOs) offer attractive possibilities for future applications in protonic ceramic fuel cells, electrolyser cells or membranes for hydrogen separation. Fundamental research is of high interest when it comes to mass and charge transport as well as defect chemistry – properties of new TCOs, which are influenced by the crystal structure. In this work, we show an elemental analysis at atomic resolution of the second order Ruddlesden-Popper ferrite Ba1.1La1.9Fe2O7. We characterized the atomic structure by X-ray diffraction and high-resolution scanning transmission electron microscopy. Furthermore, we revealed the position of the elements in the crystal structure via high-resolution elemental maps using electron energy loss spectrometry and energy-dispersive X-ray spectrometry. This enables us to distinguish between La and Ba, both located at the A-sites within the A3B2O7 phase: Our experiments show that La favours the 9-fold coordination sites in the rock salt layer, whereas Ba prefers the 12-fold coordination sites within the perovskite block. Comparing the intensities of atom columns on one specific site, we recognized slight fluctuations in Ba and La concentrations, which point to cation diffusion within the crystallites. These new insights on cation ordering in Ba1.1La1.9Fe2O7 may further contribute to the understanding of mass and charge transfer properties