Journal of Superconductivity

, Volume 7, Issue 2, pp 303–308 | Cite as

Angular dependence of transport current near critical at fields to 4 T in metalorganic thin films

  • D. H. Liebenberg
  • Michael J. Cima
  • P. C. McIntyre
  • T. L. Francavilla
X. Critical Current
  • 18 Downloads

Abstract

Values of the transport current have been obtained as a function of angle of the magnetic field to the plane of the thin film YBa2Cu3O7−d (YBCO) prepared by metalorganic deposition. Current flowed in thea, b planes at various angles to the applied magnetic fields to 4.2 T. Films with thicknesses near 350 nm were studied. For these thin films andH∥c a secondary maximum is observed whenJc> 1 MA/cm2. NearH∥a, b a large increase inIc is observed, and the sharpness, field dependence, and field directional dependence is discussed. The response to currents aboveIc is determined and the fit to a power lawV∼In shows a strong correlation betweenIc andn.

Key words

Critical current high temperature superconductor thin film angular dependence magnetic field dependence YBCO metalorganic preparation 

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Copyright information

© Plenum Publishing Corporation 1994

Authors and Affiliations

  • D. H. Liebenberg
    • 1
  • Michael J. Cima
    • 2
  • P. C. McIntyre
    • 2
  • T. L. Francavilla
    • 3
  1. 1.Office of Naval ResearchArlington
  2. 2.Ceramics Processing LaboratoryMassachusetts Institute of TechnologyCambridge
  3. 3.Naval Research LaboratoryWashington, DC

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