Study of the Vortex-Glass Phase Transition in High Tc Superconductors.

Abstract

This project extended understanding of vortex behavior in oxide superconductors in two important directions. First, we made discoveries regarding the morphology of the defects that pin vortices in films very effectively and regarding the nature of the phase transition that separates the low magnetic field, low temperature vortex glass from the high field, high temperature vortex liquid. In both cases, our results challenge the status quo. Second, we demonstrated fabrication of YBa2Cu3O(7-delta) films with a variety of dopants for Cu, and we showed that only a few percent of dopant has a dramatic effect on the superconducting properties, in a way that might be useful in some superconducting devices.

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Document Details

Document Type
Technical Report
Publication Date
Sep 01, 1994
Accession Number
ADA301265

Entities

People

  • Thomas Lemberger

Organizations

  • Ohio State University

Tags

Communities of Interest

  • Advanced Electronics
  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Crystal Lattices
  • Crystal Structure
  • Crystals
  • Diffraction
  • Fabrication
  • High Temperature
  • High Temperature Superconductors
  • Low Temperature
  • Magnetic Fields
  • Optical Properties
  • Phase Transformations
  • Physical Properties
  • Scattering
  • Thick Films
  • Thin Films
  • Three Dimensional
  • Transition Temperature

Fields of Study

  • Physics

Readers

  • Fluid Mechanics and Fluid Dynamics.
  • Superconducting Magnet Technology
  • Thin Film Deposition Science.