Open AccessHigh Critical Current Coated Conductors
Author(s) -
M. Parans Paranthaman,
V. Selvamanickam
Publication year - 2011
Language(s) - English
Resource type - Reports
DOI - 10.2172/1032436
Subject(s) - materials science , electrical conductor , metalorganic vapour phase epitaxy , conductor , critical current , chemical vapor deposition , deposition (geology) , engineering physics , nanotechnology , optoelectronics , superconductivity , composite material , paleontology , epitaxy , physics , layer (electronics) , quantum mechanics , sediment , engineering , biology
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