| 摘要 |
<p>Compositions having the nominal formula BiaSrbCacCu3Ox, wherein a is from about 1 to 3, b is from about 3/8 to 4, c is from about 3/16 to 2, x = (1.5a + b + c + y) where y is from about 2 to 5, with the proviso that ''b + c'' is from about 3/2 to 5, containing a metal oxide phase of the formula Bi, Sr3-z, Caz, Cu2, O8+w, wherein z is from about 0.1 to 0.9, w is greater than zero but less than 1, are superconducting. Processes for manufacturing such compositions and for using them are disclosed.</p> |
