Doris Litzkendorf

TL;DR: Based on phase diagram considerations, it is shown that the process window for stable growth conditions can be considerably increased as discussed by the authors, and a lower process temperature (T a =960°C to 985°C) is possible.

TL;DR: In this paper, an overview of the capabilities and limitations of established vapor deposition fiber preform technologies, and new techniques for improved and extended doping properties in fiber preparation are discussed, such as a powder-based process (REPUSIL) and an optimized glass melting method to overcome the limits of conventional vapor deposition methods concerning the volume fabrication of rare earth (RE)-doped quartz and high silica glasses.

TL;DR: Magnesium diboride-based material high-pressure synthesized at 2 GPa and 800 °C for 1 h from Mg and B (taken in the stoichiometry ratio of MgB 2 ) with addition of 2-10 wt.% of Ti demonstrated the critical current density (j c ) higher than 100 kA/cm 2 at 20 K up to 3 T and at 33 K in 0 T field.

TL;DR: In this paper, Y-Ba-Cu-O melt processed samples were prepared from mixtures of powders (starting average particle size ranging from to ) with and 1 wt% or 1 t%, and the resulting microstructure of the samples was composed of network and low concentration regions with size and morphology correlating with the starting powder size.

TL;DR: In this article, a nonlinear relationship between the sample size, the critical current density and the resulting trapped field is derived, and the maximum achievable trapped field in YBCO at 77?K is found to be around 2.5?T. This limit is obtained for reasonable geometries and high but realistic critical current densities.