Silver sheathing of high-T(sub c) superconductor wires.

摘要

The properties of Ag sheaths on high-temperature super-conductors are examined. Ag is chemically compatible with YBa(sub 2)Cu(sub 3)O(sub x) and Bi-based superconductors can be safely coprocessed with them. Residual stresses created by differences in thermal expansion coefficients are favorable and can be controlled by proper annealing. Although Ag forms low-resistance contact with high-temperature superconductors, it is not certain that effective cryogenic stabilization by Ag can occur at 77 K and above. 42 refs., 7 figs.