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| Naji, M. |
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Hänisch, Jens
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Topics
Publications (29/29 displayed)
- 2024Precise determination of oxygen content in SmBa2Cu3O7-δ thin film samples using x-ray diffractioncitations
- 2023Oxygen annealing: a tool for tailoring the pinning landscape in GdBCO thin films
- 2022Analysis of Superconducting Thin Films in a Modern FIB/SEM Dual-Beam Instrument
- 2022Structural and chemical properties of superconducting rare-earth barium copper oxide/BaHfO3 nanocomposites with rare-earth mixtures
- 2022Microstructure, pinning properties, and aging of CSD-grown SmBa$_2$Cu$_3$O$_{7−δ}$ films with and without BaHfO$_3$ nanoparticlescitations
- 2021Nanoscale Texture and Microstructure in a NdFeAs(O,F)/IBAD-MgO Superconducting Thin Film with Superior Critical Current Properties
- 2021Growth, microstructure and pinning properties of CSD REBCO films and nanocomposites
- 2021High J$_{c}$ and low anisotropy of hydrogen doped NdFeAsO superconducting thin film
- 2020Structural and chemical properties of superconducting Co-doped BaFe$_2$As$_2$ thin films grown on CaF$_2$citations
- 2020High critical current density and enhanced pinning in superconducting films of YBa2Cu3O7-δ nanocomposites with embedded BaZrO3, BaHfO3, BaTiO3, and SrZrO3 nanocrystalscitations
- 2020Effect of oxygenation process on flux pinning in pristine and BaHfO3 nanocomposite GdBa2Cu3O7 superconducting thin films
- 2020Effect of oxygenation process on flux pinning in pristine and BaHfO<sub>3</sub> nanocomposite GdBa<sub>2</sub>Cu<sub>3</sub>O<sub>7</sub> superconducting thin filmscitations
- 2020Importance of the pyrolysis for microstructure and superconducting properties of CSD-grown GdBa$_{2}$Cu$_{3}$O$_{7-x}$-HfO$_{2}$ nanocomposite films by the ex-situ approach
- 2020Importance of the pyrolysis for microstructure and superconducting properties of CSD-grown GdBa$_{2}$Cu$_{3}$O$_{7-x}$-HfO$_{2}$ nanocomposite films by the ex-situ approachcitations
- 2020Pulsed Laser Deposition of quasi-multilayer superconducting Ba(Fe$_{0.92}$Co$_{0.08}$)2As$_{2}$-BaHfO$_{3}$ nanocomposite filmscitations
- 2020Comparative study of CSD-grown BCO films with different rare earth elements: processing windows andcitations
- 2019Pulsed Laser Deposition of quasi-multilayer superconducting Ba(Fe0.92Co0.08)2As2-BaHfO3 nanocomposite films
- 2019In-field performance and flux pinning mechanism of pulsed laser deposition grown BaSnO 3 /GdBa 2 Cu 3 O 7- δ nanocomposite coated conductors by SuperOxcitations
- 2019Pinning enhancement in CSD-grown REBCO nanocomposites towards high-field applications
- 2018Chemical solution deposition of Y₁₋ₓGdₓBa₂Cu₃O$_{7-δ}$ –BaHfO₃ nanocomposite films: combined influence of nanoparticles and rare-earth mixing on growth conditions and transport propertiescitations
- 2018Preparation of YₓGd₁₋ₓBa₂Cu₃O₇₋ₓ superconducting nanocomposite films by chemical solution deposition
- 2018Progress towards YBa₂Cu₃O7-δ nanocomposite thin films using low-fluorine chemical solution deposition and preformed nanocrystals
- 2017Pulsed laser deposition of Fe-based superconductor thin films with 355nm Nd: YAG laser
- 2016Large pinning forces and matching effects in YBa2Cu3O7-δ thin films with Ba2Y(Nb/Ta)O6 nano-precipitates
- 2016Hall-plot of the phase diagram for Ba(Fe1−xCox)2As2
- 2015BaHfO3 artificial pinning centres in TFA-MOD-derived YBCO and GdBCO thin filmscitations
- 2015High field superconducting properties of Ba(Fe1-xCox)2As2 thin films
- 2014Improved REBa₂Cu₃O₇₋ₓ (RE ═ Y, Gd) structure and superconducting properties by addition of acetylacetone in TFA-MOD precursor solutionscitations
- 2005Strombegrenzende Mechanismen YBa2Cu3O7-[delta]-Dünnschichten und -Quasimultilagen
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article
Microstructure, pinning properties, and aging of CSD-grown SmBa$_2$Cu$_3$O$_{7−δ}$ films with and without BaHfO$_3$ nanoparticles
Abstract
In order to improve the electrical transport properties of REBa$_2$Cu$_3$O$_7−δ$ nanocomposite films, SmBa$_2$Cu$_3$O$_{7−δ}$ films with and without BaHfO$_3$ nanoparticles were grown by chemical solution deposition, and their microstructural and transport properties were investigated in a detailed study using transmission electron microscopy and transport measurements in magnetic fields up to 24 T. The optimization process of the crystallization step (temperature and oxygen partial pressure) as well as an aging effect, which is due to the release of trapped fluorine, are described. Critical temperature and critical current densities surprisingly improve initially during the aging. Due to the complex microstructure, the additional BaHfO3 nanoparticles have only a positive effect at low magnetic fields for our samples.