High Temperature Superconductivity
Abstract
The overall goals of this program are to develop the technology of MBE growth of HTSC material, to optimize the performance of HTSC films with high transition temperatures and critical current densities, and to explore the development of electronic devices based on such material. The recently developed MBE system is functioning well and superconducting films with TcS' above 77K are now routinely being grown, in-situ, by atomic layer epitaxy on both MgO and SrTiO3. Work is continuing on understanding such issues as required stoichiometric control and methods of improving kinetic control precision, oxidation capacities of reactive oxygen sources, and the effect of crystallographic quality on superconducting properties. Work has continued on studying the growth of layered superconductors using atomically-layered epitaxy. An incremental improvement in the measured transition temperature was obtained, from 84 to 86K. This was from a nominal 2223-phase film.
Document Details
- Document Type
- Technical Report
- Publication Date
- Aug 01, 1990
- Accession Number
- ADA226298
Entities
People
- James N. Eckstein