METHOD OF PRODUCING CERAMICS SYSTEM SUPERCONDUCTING WIRE

摘要

In order to obtain a ceramic-type superconductive wire, a bulky ceramic-type superconductor or a precursor thereof that is pretreated such that the crystalline structure is oriented is charged into a metallic pipe, subjected to the working for decreasing the diameter so as to be elongated, and is heat-treated. In the thus obtained superconductive wire, the bulk consisting of the superconductor or the precursor thereof maintains the crystalline orientation. Namely, there is obtained a superconductive wire having a high critical current density. In order to further increase the critical current density, it is desirable to repeat the step for decreasing the diameter and the step of heat treatment alternatingly plural times.