The E-J Characteristic of YBaCuO Films Determined by Inductive Measurements

  • Wolfgang Schauer
  • Volker Windte
  • Meinrad Dickgießer
  • Daole Yin
  • Christian Neumann
  • Walter Maurer
  • Hans Reiner
Chapter
Part of the An International Cryogenic Materials Conference Publication book series (ACRE, volume 40)

Abstract

An inductive method is used to determine the critical current density and the E-J characteristic for ring-, disk-, or plate-shaped YBaCuO films down to a sensitivity of 10–14 V/cm in magnetic fields up to 0.2 T and at varying temperature. A miniature Hall sensor monitors the field produced by screening currents, which flow as a response to an external field sweep. — Results are compared to existing theories describing the resistive state of high-Tc superconductors due to flux movement. Except for small intervalls of the measured E(J) relation, no satisfying agreement was found. This led us to extend the flux creep theory by introducing flux flow dissipation also in the creep regime, which results in a qualitative understanding of the observed E(J) behavior.

Keywords

Critical Current Density Sweep Rate Hall Sensor Vortex Loop Hall Voltage 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.
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Copyright information

© Springer Science+Business Media New York 1994

Authors and Affiliations

  • Wolfgang Schauer
    • 1
  • Volker Windte
    • 1
    • 2
  • Meinrad Dickgießer
    • 1
  • Daole Yin
    • 1
  • Christian Neumann
    • 1
  • Walter Maurer
    • 1
  • Hans Reiner
    • 1
  1. 1.Kernforschungszentrum Karlsruhe Institut für Technische PhysikKarlsruheGermany
  2. 2.Daimler-Benz AGFrankfurtGermany

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