Synthesis of Bi-Pb-Ca-Sr-Cu-O oriented polycrystal superconductor.

摘要

A particulate mixture comprised of Bi2CaSr2Cu2O8+/-x where x ranges from 0 to .5, Ca2CuO3, cupric oxide and lead oxide, wherein the Bi2CaSr2Cu2O8+/-x crystals are oriented with their c-axis at least sufficiently parallel to each other so as not to differ significantly from a common direction, is initially reacted producing an intermediate swollen partially reacted product which is pressed to remove the swelling and then sintered to produce a superconductive Bi2-yPbyCa2Sr2Cu3O10+/-z body where y ranges from .1 to .5 and z ranges from zero to less than 1.