Preparation of the Bi-Sr-Ca-Cu-O superconducting fibers

Abstract

B i -S r -C a -C u -0 superconducting fibers have been successfully prepared by m e a n s of the laser-heated pedestal growth m e t h o d . The superconductivity of the fiber sample i s closely related t o the composition of source material, the power of focused laser beams, the p u l i rate of growing fiber, a n d the condition of post-annealing. T h e typical size of samples is 1 5 Q p m ~3 0 m m .T h e o n s e t of transition w a s I I S K , a n d zero resistance was 85K. T h e m a j o r i t y phase an the fibe;s is the 85K (2-2-1-2) phase of the B i -S r -C a -C u -0 materials. S a m p ! e s are sta'bie a n d reproduceable.