METHOD OF MANUFACTURING DOPED SUPERCONDUCTING MATERIALS

The invention provides a method of manufacturing a doped i X-Ba-Cu-0 material, the method comprising the steps of : a) mixing an X-Ba-L-0 or X-Ba-Cu-L-0 material with an X- 1 Ba-Cu-O material; and b) crystallising the mixture; 1 wherein each X is independently selected from a rare earth (Group IIIB) element, yttrium, a combination of rare earth elements, or a combination of yttrium and a rare earth element; and L is selected from U, Nb, Ta, Mo, W, Zr, Hf, Ag, Pt, Ru and Sn. The invention further provides a doped material manufactured by the method of the invention.