We have prepared YBa 2 Cu 3 O 7-δ (YBCO) superconducting wires by electrophoretic deposition. Ag wire was used as a substrate. Adding a small amount of BaF 2 tends to remove cracks in the YBCO layer which develop during the heating process. The suppression of cracks produced a dramatic improvement in the critical current density (J c ). At 77 K, J c increased from 18 A/cm 2 for BaF 2 -free YBCO wire to 646 A/cm 2 for a critical concentration of 2.7 wt% BaF 2 after which it decreased monotonically with increasing BaF 2 content.
ASJC Scopus subject areas
- Physics and Astronomy (miscellaneous)