High Critical Current in Metal Organic Derived YBCO Films
Abstract
The Phase II STTR Project focused on optimization of the Metal Organic Deposition (MOD) process for deposition thick, high critical current YBCO films for use in the Second Generation (2G) YBCO coated conductor wires. The project successfully extended the YBCO thickness to > 2 microns using a multi-coat process. A critical current of 560 A/cm-width (77K, self-field) was achieved in a 2 microns thick, rare earth doped YBCO film. The thick film, multi-coat process coating, decomposition and reaction process was successfully transferred to American Superconductor's wide-web (40 mm) manufacturing line. 2G wires with 1.4 micron thick, rare earth doped YBCO films were produced in lengths to 100 meters. In addition, a modified decomposition process was developed for Metal Organic based YBCO precursors that resulted in an increase in the maximum single-coat thickness to >1.2 microns. A critical current approaching 450 A/cm-width was achieved in short length 1.2 microns, single-coat YBCO film.
Document Details
- Document Type
- Technical Report
- Publication Date
- Oct 31, 2010
- Accession Number
- ADA513795
Entities
People
- Xiaoping Li