Title :
Transport properties of magnetic field/liquid assisted textured YBa/sub 2/Cu/sub 3/O/sub 7-x/ tape-cast films
Author :
Lewis, J.A. ; Read, A.C. ; Holmstrom, T.K.
Author_Institution :
Sci. & Technol. Centre for Superconductivity, Illinois Univ., Urbana, IL, USA
fDate :
6/1/1997 12:00:00 AM
Abstract :
Textured YBa/sub 2/Cu/sub 3/O/sub 7-x/ films (thickness=250 /spl mu/m) were fabricated by tape casting in an applied magnetic field (H=6 T). Platinum (1 wt%) was incorporated to induce liquid phase-assisted densification in films fired on silver (Ag) foil to 942/spl deg/C under reduced pO2(g) conditions. The transport critical current densities (J/sub ct/) of such films exhibited nearly field insensitive behavior between H=0-3 T (H/spl par/c-axis) at 77 K, with J/sub ct/>1000 A/cm/sup 2/ at H=3 T.
Keywords :
barium compounds; critical current density (superconductivity); densification; high-temperature superconductors; superconducting thin films; texture; yttrium compounds; 250 mum; 77 K; YBa/sub 2/Cu/sub 3/O/sub 7-x/ tape-cast films; YBa/sub 2/Cu/sub 3/O/sub 7/; high temperature superconductor; liquid phase-assisted densification; nearly field insensitive behavior; textured; transport critical current densities; Magnetic fields; Magnetic films; Magnetic liquids; Magnetic properties; Platinum; Silver; Superconducting films; Superconducting transition temperature; Tape casting; Thick films;
Journal_Title :
Applied Superconductivity, IEEE Transactions on
