Defect structures in YBa2Cu3O7−δ with enhanced pinning at low fields
- 15 October 1991
- journal article
- research article
- Published by AIP Publishing in Journal of Applied Physics
- Vol. 70 (8), 4398-4408
- https://doi.org/10.1063/1.349122
Abstract
The defects present in a sample of YBa2Cu3O7−δ, which has been prepared by the chemical decomposition of YBa2Cu4O8, are examined in detail in an attempt to ascertain with a high degree of probability which of them is primarily responsible for the enhanced flux pinning at low fields. The CuO precipitates are not significant in this regard as they are not numerous enough and produce little if any strain in the surrounding matrix. Imperfections in the twin boundaries are also found to have little if any contribution to pinning in this material. It appears that the partial dislocations bounding stacking faults in the material are the major contributor to the flux pinning as has been suggested previously in the literature.Keywords
This publication has 21 references indexed in Scilit:
- Processing controlled stacking faults in YBa2Cu3O7−δ and their effect on flux pinningApplied Physics Letters, 1991
- Enhancement of critical current density in YBa2Cu3O7−δPhysica C: Superconductivity and its Applications, 1991
- Temperature dependence of vortex–twin-boundary interaction inPhysical Review Letters, 1990
- Conversion of 124 into 123+CuO and 124, 123 and 247 phase regions in the Y- Ba-Cu-O systemPhysica C: Superconductivity and its Applications, 1990
- Increase in the flux-pinning energy of YBa2Cu3O7−δ by shock compactionApplied Physics Letters, 1990
- Defect structure of laser deposited Y-Ba-Cu-O thin films on single crystal MgO substrateJournal of Materials Research, 1990
- Enhanced flux pinning by phase decomposition in Y-Ba-Cu-OApplied Physics Letters, 1990
- Direct observation of the lattice of Abrikosov vortices in high-Tc superconductor YBa2Cu3Ox single crystalsSolid State Communications, 1988
- Characterization of planar crystal lattice defects in the high-temperature superconductor YBa2Cu3O7Applied Physics Letters, 1988
- Structure of (CuO)2 double layers in superconducting YBa2Cu3O7Nature, 1988