本文采用顶部籽晶熔融织构法,研究了BaCuO_(2-δ)添加对单畴GdBCO超导块材性能的影响,实验结果表明,当制备GdBCO超导块材所用粉体的摩尔比为Gd123:Gd211:Gd011=1:0. 4:x(x= 0,0.1,0.2,0.3,0.4)时,均可制备出单畴GdBCO超导块材,对该系列超导块材磁悬浮力测试的结果表明,BaCuO_(2-δ)的含量对GdBCO超导体的磁悬浮力有明显影响,当BaCuO_(2-δ)的含量x=0.2mol%时样品的磁悬浮力最大,并结合其显微组织分析了BaC-uO_(2-δ)对单畴GdBaCuO磁悬浮力影响的原因.
In this paper, the effect of the BaCuO_(2-δ) addition on the properties of single domain GdBCO bulks has been investigated. The result shows that single dornain GdBCO bulk samples can be fabricated with the precursors of Gd123:Gd211:Gd011=1:0. 4:x(x=0,0. 1,0. 2,0. 3,0. 4). It is found that the levitation force of the samples is much different with different additions of BaCuO_(2-δ), and the maximum levitation force can be obtained in the sample with Gd123 : BaCuO_(2-δ) = 1 : 0. 2 in molar ratio.
参考文献
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