A superconducting oxide ceramic pattern is described. The pattern is comprised of a high Tc superconducting region and a low Tc superconducting region which exhibits a resistivity at the liquid nitrogen temperature while the high Tc region is superconductive at that temperature. The low Tc region is...http://www.google.es/patents/US5098884?utm_source=gb-gplus-sharePatente US5098884 - Method for producing a superconducting pattern by doping impurities
Method for producing a superconducting pattern by doping impurities
