High Critical Current Coated Conductors

[摘要] One of the important critical needs that came out of the DOE???s coated conductor workshop was to develop a high throughput and economic deposition process for YBCO. Metal-organic chemical vapor deposition (MOCVD) technique, the most critical steps in high technical micro fabrications, has been widely employed in semiconductor industry for various thin film growth. SuperPower has demonstrated that (Y,Gd)BCO films can be deposited rapid with world record performance. In addition to high critical current density with increased film thickness, flux pinning properties of REBCO films needs to be improved to meet the DOE requirements for various electric-power equipments. We have shown that doping with Zr can result in BZO nanocolumns, but at substantially reduced deposition rate. The primary purpose of this subtask is to develop high current density MOCVD-REBCO coated conductors based on the ion-beam assisted (IBAD)-MgO deposition process. Another purpose of this subtask is to investigate HTS conductor design optimization (maximize Je) with emphasis on stability and protection issues, and ac loss for REBCO coated conductors.

[发布日期] 2011-12-27

[学科分类] 材料科学（综合）

[关键词] CHEMICAL VAPOR DEPOSITION;CRITICAL CURRENT;CURRENT DENSITY;DEPOSITION;DESIGN;ECONOMICS;ELECTRIC POWER;MAGNETIC FLUX;OPTIMIZATION;PERFORMANCE;STABILITY;THICKNESS;THIN FILMS superconducting wire