Weak flux pinning at grain boundaries in Ag sheathed Ba2YCu3O6+x tapes
- 24 July 1989
- journal article
- research article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 55 (4) , 396-398
- https://doi.org/10.1063/1.102423
Abstract
This letter is concerned with the mechanism controlling the transport critical current measured at 4.2 K. The current densities increased with decreasing the oxide layer thickness of Ag sheathed tapes and reached 1010 A/cm2 at 15 T for the tape with a 15‐μm‐thick layer. The magnetic field dependence of critical current density in the region between 0.5 and 15 T can be explained in terms of a modified model of the theory by E. J. Kramer [J. Appl. Phys. 4 4, 1360 (1973)], based on the weak flux pinning along grain boundaries.Keywords
This publication has 8 references indexed in Scilit:
- Effect of cold-working on the critical current density of Ag-sheathed Ba2YCu3O6+xtapesSuperconductor Science and Technology, 1989
- Critical currents at 77.3 K under magnetic fields up to 27 T for an Y-Ba-Cu-O film prepared by chemical vapor depositionApplied Physics Letters, 1989
- Investigation of inter- and intragrain critical currents in high Tc ceramic superconductorsCryogenics, 1988
- High-magnetic-field critical currents in thin films of YBa2Cu3O7Nature, 1988
- Josephson-junction model of critical current in granular superconductorsPhysical Review B, 1988
- Improved critical current characteristics in 1-2-3 oxide superconductors: weak flux pinning and percolative aspectsSuperconductor Science and Technology, 1988
- Estimate of Attainable Critical Current Density in Superconducting YBa2Cu3O7-δJapanese Journal of Applied Physics, 1987
- Scaling laws for flux pinning in hard superconductorsJournal of Applied Physics, 1973