Conveners
Tue-Or3: Coated Conductors, Films & Bulk
- Sonja Schlachter
High temperature superconductors (HTS) are one of the most ambitious achievements since the discovery of superconductivity and they have the potential to revolutionize large-scale applications in the form of coated conductors (CC). $REBa_2Cu_3O_{7-\delta}$ (REBCO, RE = Rare Earth) coated conductors which belong to the class of HTS called cuprates are one of the highly studied materials due to...
REBCO (Re=Y, Eu, Gd) coated conductors (CC) based on biaxially textured, thick and homogeneous nanoengineered multilayer structures opened up new application opportunities, such as dissipation-free energy transmission in superconducting grids, highly efficient engines for electrical aviation or compact fusion reactors beyond ITER. However, current carrying capacities of CC could be further...
Within the last decades, researchers from all over the world have been demonstrating the fascinating abilities of RE Ba2Cu3O7-δ (Rare Earth=RE) coated conductors (CC) to improve our day-to-day lives. However, among all large-scale applications, the prospect of acquiring energy from fusion power plants may well be the most breath-taking one. The main...
The electronic transport and optical properties of high quality multilayers of NbTiN/AlN with ultrathin NbTiN layers were characterized. The anisotropy of the dielectric function of the multilayers confirmed their hyperbolic metamaterial properties. The superconductive transition temperature, Tc, of these engineered superconductors was enhanced up to 32% compared to the Tc of a single...
A robust technology for producing superconducting joints between Coated Conductors (CCs) is crucial for those applications in which closed-loops coils working in persistent current mode are required, such as Nuclear Magnetic Resonance (NMR). The preparation of these joints involves applying both temperature and a transverse compressive load simultaneously to produce the bonding of two adjacent...
The refinement of RE2BaCuO5 (RE211) particles is a matter of significant importance in fabricating high-performance REBa2Cu3O7- (RE123) superconductor bulks by top-seeded melt growth (TSMG). However, RE211 coarsening and RE123 peritectic decomposition naturally promote a continuous growth of the pre-existing RE211 during the heating up to the maximum processing temperature (Tmax), causing an...
Improving known materials and exploring new alternatives for applications in challenging energy environments, such as fusion, has been a priority in recent years in material science. A unique combination of corrosion resistance, toughness, strength, machinability, and wear resistance is required for materials used in energy sector applications. In recent years, a process called cryogenic...
The helium bath cooling becomes more and more expensive and limited and therefore cooling alternatives e.g. conduction cooling or other cryogens have to be used. In the past years, liquid hydrogen or sub-cooled solid nitrogen (at ~ 20 K) were used for superconducting devices. But, liquid H2 needs a special safety conditions and solid N2 may sublimate easily and lost the cooling efficiency....
