| 摘要 |
A polycrystalline metal oxide such as YBa2Cu307-X (where 0>X>0.5) exhibits superconducting properties and is capable of conducting very large current densities. By aligning the two-dimensional Cu-O layers which carry the current in the superconducting state in the a- and b-directions, i.e., within the basal plane, a high degree of crystalline axes alignment is provided between adjacent grains permitting the conduction of high current densities, i.e., on the order of 10<4>- 10<5> amps/cm<2>. |
