Accession Number:

ADA291016

Title:

High T sub c Superconductor/Ferroelectric Heterostructures.

Descriptive Note:

Final rept.,

Corporate Author:

SRI INTERNATIONAL MENLO PARK CA

Personal Author(s):

Report Date:

1994-12-01

Pagination or Media Count:

8.0

Abstract:

Thin films of the ferroelectric perovskite, Bax Sr1-x TiO3 BST, were deposited on superconducting 100YBa2Cu3OxYBCO 100Yttria-stabilized zirconiaYSZ substrates and 100Si by ion-beam sputtering. Microstructural and compositional features of the ceramic bilayer were assessed by a combination of x-ray diffraction XRD and scanning electron microscopy. The films were smooth and featureless, and energy dispersive x-ray spectroscopy EDX data indicated that film composition closely matched target composition. XRD analysis showed that films deposited on YBCO substrates were highly c-axis textured, while the films deposited on 100Si did not exhibit any preferred growth morphology. The superconducting properties of the YBCO substrate layer were maintained throughout the processing stages and, as such, it was demonstrated that ion beam sputtering is a viable method for the deposition of FerroelectricYBCO heterostructures. jg

Subject Categories:

  • Inorganic Chemistry
  • Physical Chemistry
  • Crystallography
  • Electricity and Magnetism

Distribution Statement:

APPROVED FOR PUBLIC RELEASE