悬浮
材料科学
扫描电子显微镜
超导电性
磁强计
微观结构
磁场
粒度
衍射
磁悬浮
凝聚态物理
分析化学(期刊)
相(物质)
复合材料
磁铁
化学
光学
电气工程
量子力学
物理
工程类
有机化学
色谱法
作者
Sait Barış Güner,Şükrü Çelık,Murat Tomakin
标识
DOI:10.1016/j.jallcom.2017.02.134
摘要
The temperature dependence of the magnetic levitation force has been investigated for single-grain YBCO bulk sample, 20 mm in diameter with a thickness of 8 mm, fabricated by top-seeded melt growth (TSMG) method using Nd123 seeded. The superconducting properties of the single grain YBCO bulk are studied by VSM (Vibrating Sample Magnetometer), the microstructures and the phase constituents of those that are seen by SEM (Scanning Electron Microscope) and XRD (X-ray Diffraction). The measurements of superconducting properties indicated that magnetic levitation forces of the sample were found 11.23, 10.81, 10.34, 9.23 and 7.02 N at the temperatures of 37, 47, 57, 67 and 77, respectively, and the values of the onset critical temperature (Tc) and the zero-field critical current density (Jc) are 89.3 K and 5.6 × 104 A/cm2 at 77 K, respectively. This research is intended to help for the large scale superconductor levitation performances at different temperatures.
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