High-Temperature Ceramic Superconductors
Abstract
The principal goals of this program are (1) to demonstrate fabrication of high-temperature ceramic superconductors via sol-gel method that can operate at or above 90K with appropriate current density, J sub c, in forms useful for application in resonant cavities, magnets, motors, sensors, computers, and other devices; and (2) to fabricate and demonstrate selected components made of these materials, including microwave cavities and magnetic shields. Chemical pathways for synthesis of 123 identified, process parameters window for sol-gel derived 123 fibers established, continuous flexible fibers 15-200 microns in diameter producted, fibers with T sub c approx.=92.5 K, Delta T=1.5 K, J sub c =2000 A/sqcm at 77 K, 0 field ; 4000 at 57K, 100 Oe was produced, formed adherent 123 oriented films on metals and ceramic substrates, achieved film T sub c approx.=92 K, Delta T= 4 K, J sub c =400 A/sqcm at 40 K, 0 field.
Document Details
- Document Type
- Technical Report
- Publication Date
- Nov 15, 1990
- Accession Number
- ADA230074
Entities
People
- K. S. Mazdiyasni