Critical current density improvement in BSCCO superconductors by application of an electric current during laser floating zone growth

摘要: Abstract BSCCO fibres with nominal compositions 2:2:1:2, 2:2:2:3 and 2:2:2:4 were grown by LFZ EALFZ (electrically assisted) processes. The application of an electrical current during the crystallization process promotes radial distribution homogeneity primary cuprate. Besides, a notable feature is strong grain alignment along fibre axis direction obtained when technique used. Both effects enhance transport properties. This improvement was more pronounced for lesser amounts Ca Cu in composition. For 2:2:1:2 fibre, value JC = 2830 A/cm2 technique, much higher than one achieved conventional (JC = 1160 A/cm2).