Superconducting Thin Films, Composites and Junctions.

Abstract

The successful synthesis of high-Tc YBa2Cu3O7 films by means of electron beam codeposition has been accomplished. Several important growth parameters have been surveyed in a preliminary way. The substrates investigated include Al2O3, ZrO2, MgO and SrTiO3. The films were characterized by resistivity measurements, X-ray diffraction, microprobe, and Rutherford backscattering analysis. Some TEM and critical current density studies were also carried out. The best results to date have been obtained on SrTiO3 substrates with which polycrystalline epitaxial growth has been achieved. Resistive superconducting transitions with zero resistance at 89.5K and a 2K width have been observed in these films. Keywords: Thin films; Superconductivity; Vapor deposition; Single crystal films; Small scale Calorimetry, Structures, Metastable phases, Oxides.

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Document Details

Document Type
Technical Report
Publication Date
Nov 25, 1987
Accession Number
ADA193123

Entities

People

  • Theodore H. Geballe

Organizations

  • Stanford University

Tags

Communities of Interest

  • Advanced Electronics

DTIC Thesaurus Topics

  • Air Force
  • Current Density
  • Diffraction
  • Electron Beams
  • Epitaxial Growth
  • Films
  • High Temperature
  • Materials
  • Measurement
  • Physics
  • Scientific Research
  • Substrates
  • Thin Films
  • Transition Temperature
  • Transitions
  • Universities
  • X-Ray Diffraction

Fields of Study

  • Physics

Readers

  • Materials Science and Engineering.
  • Semiconductor Device Technology
  • Superconducting Magnet Technology

Technology Areas

  • Directed Energy
  • Directed Energy - Pulsed-Laser Deposition
  • Microelectronics
  • Microelectronics - Graphene