Use of Laser Lithography for Striating 2G HTS Conductors for AC Loss Reduction

作者：Prestigiacomo Joseph C^*; Auyeung Raymond C Y; Charipar Kristin; Claassen John; Bassim Nabil; Pique Alberto; Osofsky Michael S; Rupich Martin W; Kvitkovic Jozef; Hatwar Rajeev; Pamidi Sastry

来源：IEEE Transactions on Applied Superconductivity, 2017, 27(8): 6603905.

DOI：10.1109/TASC.2017.2766134

• AC loss
• critical current
• laser lithography
• striation
• YBCO second-generation (2G) high-temperature superconducting (HTS)

A scalable laser lithographic process has been used to striate second-generation high-temperature superconducting coated conductors manufactured with a rolling-assisted biaxially textured substrate and metal organic deposition process by American Superconductor Corporation to reduce ac losses for electric power applications. The process involves laser patterning a resist coating and etching, which can be scaled up for commercial production. The results show that the critical current, I-c, is not degraded for striation widths greater than 150 mu m and that the ac losses for the 150-mu m wide striations are reduced from the unpatterned 1-cm wide conductor by a factor of 15 for a 60-mT perpendicular peak magnetic field at 50 Hz.

• 出版日期2017-12