Affiliation:
1. Tohoku University
2. National Institute for Materials Science
Abstract
The current-carrying properties beyond a critical current determined by a voltage criterion
for Ag-sheathed Bi2Sr2CaCu2O8 (Ag/Bi2212) superconductors are examined at 10 K and 20 K in
magnetic fields. We prepared the in-field heat-treated Ag/Bi2212 wires, in order to obtain the
magnetic field alignment microstructure for Ag/Bi2212. The electric field and current density (E-J)
properties were evaluated for Ag/Bi2212 wires with and without the in-field heat-treatment. We
found that the E-J properties for the in-field heat-treated Ag/Bi2212 wires differ from those for the
out-of-field heat-treated ones, and are analogous to the E-J dependence for Bi-system high
temperature superconductors with the sintered-like grain morphology.
Publisher
Trans Tech Publications Ltd
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