Accession Number:

ADA523069

Title:

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

Descriptive Note:

Journal article postprint 16 Sep 2007-16 Sep 2009

Corporate Author:

AIR FORCE RESEARCH LAB WRIGHT-PATTERSON AFB OH PROPULSION DIRECTORATE

Report Date:

2010-03-01

Pagination or Media Count:

10.0

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.

Subject Categories:

  • Physical Chemistry
  • Electrical and Electronic Equipment
  • Test Facilities, Equipment and Methods
  • Electricity and Magnetism

Distribution Statement:

APPROVED FOR PUBLIC RELEASE