Wednesday, 20 March 2019: PhD Thesis Defense by Alexander Stangl
Oxygen kinetics and charge doping for high critical current YBCO films
by Alexander Stangl, Superconducting Materials and Large Scale Nanostructures (SUMAN) Group, ICMAB
Date: Wednesday, 20 March 2019
Time: 11 am
Venue: Sala d’actes Carles Miravitlles, ICMAB-CSIC
In this work we have obtained a fundamental understanding of the oxygen incorporation mechanisms into the structure and have identified the rate determining step. Additionally we have demonstrated the influence of heat treatments on the microstructure and the chemical composition of the surface. The thorough understanding of the oxygenation process enabled us to reach the overdoped state of YBCO and to increase the critical current to record high 90MA/cm² at 5K, a third of the depairing current density.
Supervisors:
- Prof. Teresa Puig, Superconducting Materials and Large Scale Nanostructures, ICMAB
- Dra. Anna Palau, Superconducting Materials and Large Scale Nanostructures, ICMAB
PhD Committee: