Accession Number:

ADA250657

Title:

Pulsed Laser Deposition of High Tc Superconducting Thin Films

Descriptive Note:

Final rept.,

Corporate Author:

XEROX PALO ALTO RESEARCH CENTER CA

Personal Author(s):

Report Date:

1992-04-15

Pagination or Media Count:

156.0

Abstract:

Superconducting thin films have been deposited in-situ on several substrate materials using pulsed excimer laser deposition. The major accomplishments were in four separate areas 1 We were the first to grow excellent quality YBa2Cu3O7 on Si and on silicon-on-sapphire. The quality of these films has enabled several applications and other studies to be realized. These include infrared detectors and superconducting metal-insulator-semiconductor structures, as well as flux motion studies. 2 We were the first to grow excellent quality YBCO on GaAs. This success allows superconductors to be combined with high-speed GaAs for future device applications. 3 We were the first to grow a-axis oriented YBCO films using monolayer buffers of PrO2. This structural orientation favors technical applications, such as, Josephson devices or tunnel junctions. 4 We were the first to observe an extreme sensitivity of T sub c to cool-down rate for epitaxial Fe-doped YBCO films. These results not only may yield information on the role of the Cu-O chains and planes in the superconductivity of this material but also may lead to procedures to increase the flux pinning.

Subject Categories:

  • Lasers and Masers
  • Electricity and Magnetism

Distribution Statement:

APPROVED FOR PUBLIC RELEASE