Understanding the porosity and its effects on the superconducting properties of YBCO single grains
Understanding the porosity and its effects on the superconducting properties of YBCO single grains
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DOI：
10.1016/j.jeurceramsoc.2022.11.039
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发表时间：
2022-11
影响因子：
5.7
通讯作者：
Josef Baumann;Yunhua Shi;Dian Weerakonda;J. Durrell;D. Cardwell
中科院分区：
文献类型：
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作者：
Josef Baumann;Yunhua Shi;Dian Weerakonda;J. Durrell;D. Cardwell
孔隙率对22块不同尺寸的YBCO超导体的俘获场的影响进行了研究和评估，使用斯皮尔曼的相关系数，以探索这些关键功能的意义在统计上显着的方式。单颗粒YBCO大块样品的直径与俘获场的相关性很强，并且比孔隙率的影响更显著。因此，孔隙度对平均Jc的直接影响作为本研究的主要目的进行了研究。在单颗粒顶部和底部测量的捕获场计算的平均Jc与样品的孔隙率之间存在相关性。这一观察结果表明，任何降低孔隙度的方法都可以显著地改善Jc和捕获场。
The influence of porosity on the trapped field achievable in 22 YBCO bulk superconductors of different sizes has been investigated and evaluated using Spearman's correlation coefficient in order to explore the significance of these critical features in a statistically significant way. The diameter of the single grain YBCO bulk sample correlates strongly with trapped field, and significantly more so than the effect of porosity. Therefore, the direct effect of porosity on the averageJcwas investigated as the main aim of this investigation. A correlation was found between the averageJccalculated from trapped field measured at the top and bottom of the single grain and the porosity of the sample. This observation suggests that any method of reducing the porosity may significantly improveJcand trapped field.