HTSC GRAIN-BOUNDARY WEAK LINKS EMPLOYING HIGH-QUALITY ICM SPUTTERED YBCO FILMS

Bicrystal grain boundary junctions of YBCO have been fabricated by using the Inverted Cylindrical Magnetron d.c. sputtering technique. The main characteristics of the junction behaviour are reported. Some aspects of the experimental results are discussed in the framework of existing models developed for describing weak-link structures.