Use of barium peroxide in superconducting Y1Ba2Cu3Ox and related materials.

摘要

Improved process for making superconductors. A powdered peroxide, "MO2", is admixed with two oxide powders, "L oxide" and "A oxide"; where M is at least one metal of the group Ba, Mg, Ca, and Sr - preferably Ba; O is oxygen; L is at least one metal of the rare earth group, including scandium and yttrium - preferably yttrium; and A is at least one metal of the group Cu, Ag, and Au - preferably Cu. The powdered mixture becomes superconducting when shaped and fired. The peroxide oxygen helps furnish oxygen requirements in the final superconducting composition, e.g., Y1Ba2Cu3Ox. Barium peroxide has a relatively low melting point and thus aids in achieving efficient sintering with enhanced homogeneity. The invention process results in new compositions.