Suppression of vortex channeling in meandered YBa2Cu3O7-d grain boundaries

Details Suppression of vortex channeling in meandered YBa2Cu3O7-d grain boundaries Suppression of vortex channeling in meandered YBa2Cu3O7-d grain boundaries

2007-08-22

arxiv.org/abs/0708.2985v1

Physics

Condensed Matter

Superconductivity

Submitted to APL

Scientific paper

10.1063/1.2801696

We report on the in-plane magnetic field (H) dependence of the critical current density (Jc) in meandered and planar single grain boundaries (GBs) isolated in YBa2Cu3O7-d (YBCO) coated conductors. The Jc(H)properties of the planar GB are consistent with those previously seen in single GBs of YBCO films grown on SrTiO3 bi-crystals. In the straight boundary a characteristic flux channeling regime when H is oriented near the GB plane, associated with a reduced Jc, is seen. The meandered GB does not show vortex channeling since it is not possible for a sufficient length of vortex line to lie within it.

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