Title :
Transport and anisotropic properties of coated conductors deposited by PLD on steel substrates
Author :
Vostner, A. ; Weber, H.W. ; Freyhardt, H.C. ; Usoskin, A. ; Dzick, J. ; Knoke, J.
Author_Institution :
Atom. Inst., Austrian Univ., Vienna, Austria
fDate :
3/1/2001 12:00:00 AM
Abstract :
Coated conductors deposited by a novel high-rate pulsed laser deposition (PLD) technique on ion-beam-assisted-deposition (IBAD) layers of yttria-stabilized zirconia (YSZ) on non-magnetic steel ribbons were investigated. An XRD analysis of the superconducting layers showed in-plane alignments with a FWHM from 10 to 25° and an out-of-plane alignment of better than 2°. We report on the field and temperature dependence of the critical transport current density in these YBa2 Cu3O7-δ films of various thickness. In addition, the angular dependence of the transport current at various external magnetic fields is presented. Thirdly, artificial pinning centers were introduced into the superconductors by neutron irradiation. The influence of these defects on the critical current densities and on the anisotropy ratio are discussed
Keywords :
X-ray diffraction; critical current density (superconductivity); high-temperature superconductors; pulsed laser deposition; superconducting thin films; PLD; YSZ; anisotropic properties; anisotropy ratio; artificial pinning centers; coated conductors; critical current densities; critical transport current density; high temperature superconductor; in-plane alignments; ion-beam-assisted-deposition; neutron irradiation; steel substrates; superconducting layers; temperature dependence; yttria-stabilized zirconia; Anisotropic magnetoresistance; Conductors; Current density; Magnetic films; Optical pulses; Pulsed laser deposition; Steel; Superconducting epitaxial layers; Temperature dependence; X-ray scattering;
Journal_Title :
Applied Superconductivity, IEEE Transactions on
