Suppression of vortex channeling in meandered YBa2Cu3O7-d grain boundaries

J. H. Durrell; D. M. Feldmann; C. Cantoni

doi:10.1063/1.2801696

Suppression of vortex channeling in meandered YBa2Cu3O7-d grain boundaries

Superconductivity 2009-11-13 v1

Authors: J. H. Durrell , D. M. Feldmann , C. Cantoni

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Abstract

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.

Cite

@article{arxiv.0708.2985,
  title  = {Suppression of vortex channeling in meandered YBa2Cu3O7-d grain boundaries},
  author = {J. H. Durrell and D. M. Feldmann and C. Cantoni},
  journal= {arXiv preprint arXiv:0708.2985},
  year   = {2009}
}

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