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采用部籽晶熔渗工(TSIG)制备出了配比为Bi2O3:Y2BaCuO5=x:(1 x)的系列单畴YBCO超块材(其中x=0.1,0.3,0.5,0.7,0.9,2,单位为wt%),并且研究了不同比例的氧化物Bi2O3掺杂对样品的生长形貌、磁悬浮力及其微观结构的影响.实验结果表明了,Bi2O3粒子的掺杂在样品中生成Y2Ba4CuBiOx(YBi2411)纳米粒子从而可有效地提高样品的磁悬浮性能.当Bi2O3粒子掺杂量x从0.1wt%(质量分数,下同)增加0.7wt%时,样品的磁悬浮力从7 N增加25 N;当其掺杂量从0.7 wt%增加2 wt%时,样品的磁悬浮力从25 N降低6 N.该实验结果对于我们进一步研究氧化物掺杂对磁通扎作用的影响及提高YBCO超块材的性能有着重要的影响.
A series of single-domain YBCO superlattice with the ratio of Bi2O3: Y2BaCuO5 = x: (1 x) was prepared by partial seed infiltration (TSIG) (where x = 0.1,0.3,0.5,0.7,0.9,2, (Wt%)), and the effects of different proportions of Bi2O3 oxide on the morphology, magnetic levitation force and microstructure of the samples were investigated.The experimental results show that the doping of Bi2O3 particles produces Y2Ba4CuBiOx (YBi2411 ) Nano-particles can effectively improve the magnetic levitation performance of the samples.When the content of Bi2O3 particles increases by 0.7wt% from 0.1wt% (mass fraction), the magnetic levitation force increases 25N from 7N; The increase of doping amount from 0.7 wt% to 2 wt% decreases the magnetic levitation force of the sample from 25 N to 6 N. The experimental results are very useful to further study the effect of oxide doping on the flux linkage and the properties of YBCO superlattice Has a significant impact.