Abstract
2212 BiSrCaCuO superconducting fibers were prepared by the laser pedestal growth method. The influence of fiber diameter and growing speed on microstructures and superconducting properties was investigated. Temperature gradient and growing speed were important factors in obtaining highly aligned micro-structures. The temperature gradient increases as the fiber diameter decreases. So highly aligned structures were obtained when the fiber diameter was small and the growing speed was low. When the nominal diameter of grown fiber was 0.5mm and the growing speed was 30mm/h, Jc of 17,500A/cm2(77.3K, 0T) was obtained. In the case of small fiber diameter, aligned crystal structures and relatively high Jc’s were maintained in spite of the high growing speed.
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