Abstract
We have formed BaZrO3 nanocolumns and (Gd,Y)2 O 3 nanoprecipitates in reel-to-reel metal organic chemical vapor deposition (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) Ba2Cu 3O7-x tape of 1 m in 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, 77 K) and above 186 A/cm width at (1 T, 77 K). 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)2 O3 created by optimized MOCVD conditions.
| Original language | English |
|---|---|
| Article number | 062513 |
| Journal | Applied Physics Letters |
| Volume | 94 |
| Issue number | 6 |
| DOIs | |
| State | Published - 2009 |
Funding
This work was partially supported by U.S. Department of Energy, Office of Electricity Delivery and Energy Reliability–Superconductivity Program.
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