Dynamic Field and Current Distributions in Multifilamentary YBa2Cu3O7-delta Thin Films with Magnetic Coupling (POSTPRINT)

Abstract

We report on the effects of different multifilamentary geometries on the dynamic current and field distributions in YBa2Cu3O7-delta thin films. Finite-element model simulations are presented that allow a direct comparison of the calculated magnetic flux and current profiles with experimental data obtained by time-resolved magneto-optical imaging. We find that increasing the distance between filaments reduces the magnetic coupling and decreases the ac losses. Screening and transport currents also redistribute more evenly between all filaments. The measured transport current density profiles are in good agreement with the modified critical state model.

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Document Details

Document Type
Technical Report
Publication Date
Mar 01, 2010
Accession Number
ADA523069

Entities

People

  • Andrea Lucarelli
  • Gunter Lüpke
  • Ran Yang

Organizations

  • Air Force Research Laboratory

Tags

Communities of Interest

  • Advanced Electronics

DTIC Thesaurus Topics

  • Air Force
  • Air Force Research Laboratories
  • Couplings
  • Current Density
  • Differential Equations
  • Energy
  • Experimental Data
  • Filaments
  • Films
  • Geometry
  • Magnetic Fields
  • Magnetic Flux
  • Materials
  • Simulations
  • Superconductors
  • Thin Films
  • Transport Ships

Fields of Study

  • Physics

Readers

  • Computational Fluid Dynamics (CFD)
  • Plasma Physics.
  • Superconducting Magnet Technology