Wm. Yang et al., THE EFFECT OF PROCESSING CONDITION ON THE MORPHOLOGY OF BULK YBCO SUPERCONDUCTORS BY MELT SLOWLY COOLING PROCESS, Physica. C, Superconductivity, 282, 1997, pp. 529-530
The effect of lateral temperature gradient (TG) on the macro structure
of bulk YBCO superconductors have been investigated. The results indi
cate that a positive lateral TG is more effective to depress the numbe
r of Y123 grain nucleation. The levitation force of samples fabricated
in this kind of furnace is about 2.5 times higher than that of sample
s fabricated in furnace without a positive lateral TG.