Accession Number:

ADA279545

Title:

High Temperature Superconducting Films and Multilayers for Electronics

Descriptive Note:

Final rept. 21 Feb 91-20 Feb 94,

Corporate Author:

WESTINGHOUSE SCIENCE AND TECHNOLOGY CENTER PITTSBURGH PA

Personal Author(s):

Report Date:

1994-04-19

Pagination or Media Count:

208.0

Abstract:

The overall objective of this program was to develop a materials and fundamental device base for high-transition-temperature superconducting HTS electronics capable of operating at 50K. Progress is reported on four tasks which address problems fundamental to the understanding of the superconducting state in HTS films, the application of HTS films in passive microwave circuits, the realization of HTS digital electronics, and the development of new superconducting devices. Large-area epitaxial YBCO films with low rf losses developed under this program and techniques for depositing them on both sides of single-crystal substrates were used in other Westinghouse and government-funded programs to develop HTS channelized filterbanks, delay lines, UHF antenna matching networks, and low-phase-noise resonators. An understanding was achieved of the role of oxygenation during film growth and the effect of film microstructure on rf losses. For HTS digital circuit fabrication, both active devices step-edge and edge-type YBCO Josephson junctions and trilayer BKBO junctions and passive structures were developed, such as crossovers,

Subject Categories:

  • Electrical and Electronic Equipment
  • Crystallography
  • Electricity and Magnetism
  • Solid State Physics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE