SUPRALEITENDER KERAMISCHER FILM UND VERFAHREN ZU DESSEN HERSTELLUNG.

摘要

A superconducting oxide ceramic pattern is described. The pattern comprises a high Tc superconducting region which is superconductive at liquid nitrogen temperatures and a low Tc superconducting region which exhibits a resistivity at liquid nitrogen temperatures. The low Tc region is doped with an impurity such as Si and then subjected to thermal treatment to oxidize the impurity and thereby lower the Tc of the region.