We have prepared YBa2Cu3O7-δ (YBCO) superconducting wires by electrophoretic deposition. Ag wire was used as a substrate. Adding a small amount of BaF2 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, Jc increased from 18 A/cm2for BaF2-free YBCO wire to 646 A/cm2for a critical concentration of 2.7 wt% BaF2 after which it decreased monotonically with increasing BaF2 content.
ASJC Scopus subject areas
- Physics and Astronomy (miscellaneous)