Controlled Introduction of Flux Pinning Centers in YBa2Cu3O7-x Films during Pulsed-Laser Deposition (Postprint)

Abstract

To introduce controlled random inclusion of nanometer-sized nonsuperconducting particulates in YBa2Cu3O7-x films for flux pinning enhancement, a special pulsed-laser-ablation YBa2Cu3O7-x target with a Y2BaCuO5 sector was made and the films were deposited on LaAlO3 substrates. Initial results showed that the films consist of 10-20 nm-sized precipitates. In a 0.5 micron thick film, a transport critical current density (Jc) >3 MA/sq cm at 77 K in self-field was measured. Magnetization Jc at 77 and 65 K showed significant improvements in these films with fine precipitates as compared to regular YBa2Cu3O7-x films (>10 times increase at 9 T, 65 K).

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Document Details

Document Type
Technical Report
Publication Date
Feb 01, 2012
Accession Number
ADA559159

Entities

People

  • C. Varanasi
  • J. Carpenter
  • John H. Burke
  • Paul N. Barnes
  • Timothy J. Haugan

Organizations

  • Air Force Research Laboratory

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Ablation
  • Air Force
  • Air Force Research Laboratories
  • Current Density
  • Electron Microscopes
  • Films
  • Lasers
  • Magnetization
  • Materials
  • Particles
  • Particulates
  • Precipitates
  • Pulsed Lasers
  • Scanning Electron Microscopes
  • Substrates
  • Thick Films
  • Transport Ships

Fields of Study

  • Physics

Readers

  • Superconducting Magnet Technology
  • Thin Film Deposition Science.

Technology Areas

  • Directed Energy
  • Directed Energy - Pulsed-Laser Deposition