Time-Resolved Magneto-Optical Imaging of Y1Ba2Cu3O7-delta Thin Films in High-Frequency AC Current Regime (Postprint)

Abstract

We present a time-resolved magneto-optical (MO) imaging study of high-temperature superconductor (HTS) in a high-frequency alternating current (AC) regime. The evolution of the magnetic flux density distribution in YBa2Cu3O7-delta (YBCO) thin film samples is studied as a function of the phase of the applied AC current. A quantitative analysis of the data shows that the maxima of the AC current density is shifted from the edges further inside the sample, which may be caused by the higher self-induced field in that region. This technique can be used to study magnetic flux evolution in HTS films and coated conductors in the high-frequency current regime.

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Document Details

Document Type
Technical Report
Publication Date
Feb 01, 2012
Accession Number
ADA560968

Entities

People

  • A. Lucarelli
  • G. Luepke
  • George A. Levin
  • Paul N. Barnes
  • Timothy J. Haugan

Organizations

  • Air Force Research Laboratory

Tags

Communities of Interest

  • Advanced Electronics
  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Air Force
  • Air Force Facilities
  • Air Force Research Laboratories
  • Charge Coupled Devices
  • Current Density
  • Films
  • Flux Density
  • Frequency
  • Imaging Techniques
  • Lasers
  • Magnetic Fields
  • Magnetic Flux
  • Magnetic Flux Density
  • Measurement
  • Military Research
  • Superconductors
  • Thin Films

Fields of Study

  • Physics

Readers

  • Optical Physics and Photonics.
  • Space/Atmospheric Physics.
  • Thin Film Deposition Science.