熔融织构准单畴YBCO超导块材中的Y2 BaCuO5(Y-211)相粒子可以起到增强材料磁通钉扎力的作用.实验发现,顶部籽晶诱导生长熔融织构YBCO超导块材中的Y-211粒子分布呈不均匀性.Y-211相粒子在近籽晶处密度较低,而在样品底部则密度较高,并且呈现Y-211粒子团聚现象.通过优化Y-211相粒子在母体中的分布,可以有效提高YBCO块材的磁悬浮力.实验研究结果表明,Y-211相粒子在母体中的分布越均匀,且Y-211粒子平均粒径越小,则块材的磁悬浮力则越大.
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