| 摘要 |
PURPOSE:To obtain the superconducting composition exhibiting a high superconductivity transition temp. with a relatively short sintering time by forming the Bi-Pb-Sr-Ca-Cu-Zn-O-based composition of specified composition. CONSTITUTION:This superconducting composition is expressed by the formula, where 0<=p<0.4, 1.9<x<2.2, 1.9<q<2.1, 1.9<r<2.3, 2.8<y<3.1, 0.1<s<3.0 and 10.0<z<10.2. The composition can be formed into a tape, wire, film, sheet, etc. The composition can be formed on a reinforcing wire of carbon fiber, ceramic and metal such as silver. The composition is also packed in a hollow material such as a silver sheath and used. Furthermore, a multicore superconductor wire is obtained from the composition using a matrix of copper, etc. Besides, the thin film of the composition is formed on a board of Si, MgO, LaGaO3, etc., and used as the wiring for the element and LSI. |
