High Temperature Superconductor/Insulator Composite Thin Films with JosephsonCoupled Grains

摘要

High temperature superconductor composite thin film devices with easily movedJosephson vortices are described having high Tc and good magnetic vortex properties. A preferred composite material was YBCO/CeO2 thin film on a MgO substrate. The superconductor composites were preferably formed by off-axis co-sputtering. A surprising recovery in properties was seen after plasma etching with oxygen.