High temperature superconductor material of BSCCO system and starting composition therefore

High temperature superconductor material of BiSrCaCuO-family comprising:

• a material of melt-cast BiSrCaCuO-type selected from BiSrCaCuO-2212 type material and BiSrCaCuO-2223 type material, and is a shaped body of round cross section obtained by centrifugal melt casting process, wherein within superconducting phases more than 0.05, less than 0.50 atomic percent of Sr, is substituted by Ba, wherein said material is from a starting composition being a mixture of starting compounds of the metal elements of the high temperature superconductor material in an appropriate ratio where part of the starting compound for Sr, required for the respective non substituted high temperature superconductor material, is substituted by a starting compound for Ba.

High temperature superconductor comprising:

• a material of BiSrCaCuO-family selected from BiSrCaCuO-2212 type material, wherein a proportion of Bi may be substituted by Pb, and BiSrCaCuO-2223 type material, wherein within superconducting phases more than 0.05, less than 0.50 atomic percent of Sr, is substituted by Ba, wherein the high temperature superconductor material is of melt-cast BSCCO-type and is a shaped body obtained by centrifugal melt casting process forming a shaped body with round cross section.