Publication Type
Journal
Journal Name
Applied Physics Letters
Publication Date
Volume
94
Issue
6
Abstract
We have formed BaZrO3 nano-columns and (Gd,Y)2O3 nano-precipitates in reel-to-reel
MOCVD processed (Gd,Y)Ba2Cu3O7-x coated conductors and increased the critical currents (Ic) of
the conductors in applied magnetic fields to remarkable levels. A (Gd,Y)Ba2Cu3O7-x tape of 1m
length with 6.5% Zr-additions and 30% composition rich in both Gd and Y showed Ic values of 813
A/cm-width at (self-field, 77K) and above 186 A/cm-width at (1T, 77K). The strongly enhanced
flux pinning over a wide range of magnetic field orientations can be attributed to the bidirectionally
aligned defect structures of BaZrO3 and (Gd,Y)2O3 created by optimized MOCVD conditions.
