Comparison of the levitation forces of melt-processed YBaCuO superconductors for different magnets

被引：29
|
作者：
Teshima, H
Morita, M
Hashimoto, M
机构：
[1] Adv. Technol. Research Laboratories, Nippon Steel Corporation, Kawasaki 211, 1618 Ida, Nakahara-ku
来源：
PHYSICA C | 1996年 / 269卷 / 1-2期
关键词：
superconducting levitation; levitation force; superconductors; melt-processed YBaCuO bulk materials;
D O I：
10.1016/0921-4534(96)00428-5
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
It is difficult to compare the levitation force of superconductors for different magnets. A new parameter, alpha, is proposed in this paper, which is defined as the ratio of a superconducting levitation force to the limitation force for a given magnet. Using this parameter, the comparison between different superconducting levitation forces in melt-processed YBaCuO superconductors (QMG) has been done, such as a levitation force of 269 kN/m(2) (= 2.74 kgf/cm(2)) for a superconductor 77.3 mm in diameter and a magnet of NdFeB 50 mm in diameter, and a levitation force of 260 kN/m(2) (= 2.65 kgf/cm(2)) for a superconductor 46.5 mm in diameter and a magnet of PrFeBCu 36 mm in diameter. The former is alpha = 0.67 and the latter is alpha = 0.81.
引用
收藏
页码：15 / 21
页数：7
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