Bi(Pb) SrCaCuO superconducting fibers without post-growth heat treatment

Our recent results on the Bi-based superconducting fibers fabricated by the laser-heated pedestal-growth (LHPG) method are reported. By using a new technical process, these superconducting fibers were successfully fabricated without post-growth heat treatment which were indispensable in the previously used process. It was evident that the superconducting fibers so grown had a stronger textured structure and higher critical current density J c (77°K, OT)= 4200 A/cm 2 than those with post-growth heat treatment. The composition of the source materials, the growth techniques and the effect of post-growth heat treatments are also discussed