Critical Current Enhancement in Single-Crystal Ba2Ycu3O7
- 1 January 1989
- journal article
- Published by Springer Nature in MRS Proceedings
Abstract
The critical current density, Jc, of single crystals of Ba2YCu3O7 is comparable to that of melt-textured-growth materials as well as to the intragrain Jc of bulk polycrystalline Ba2YCu3O7. Typical values at 77 K and 9 kOe are near 5x 103 A/cm2, and are presumably limited by weak pinning. We have obtained a significant enhancement of this pinning-limited Jc by three techniques: 1) a short reannealing procedure, 2) fast neutron irradiation, and 3) proton irradiation. Interestingly, the combination of the first technique followed by either irradiation is not as effective as the iradiation alone. That is, the best candidates for irradiation are not necessarily those with the highest initial Jc.Keywords
This publication has 7 references indexed in Scilit:
- Critical currents near 106 A cm-2 at 77 K in neutron-irradiated single-crystal YBa2Cu3O7Nature, 1989
- Effect of particle-induced displacements on the critical temperature of YBa2Cu3O7−δApplied Physics Letters, 1989
- Increased flux pinning upon thermal-neutron irradiation of uranium-dopedPhysical Review B, 1989
- Magnetization studies of YBa2Cu3O7−x irradiated by fast neutronsSolid State Communications, 1988
- Fast-neutron irradiation ofPhysical Review B, 1988
- Enhanced critical magnetization currents due to fast neutron irradiation in single-crystalPhysical Review B, 1987
- Superconductivity in YBa2Cu3O7 single crystalsNature, 1987