Static and dynamic stability of levitated ball above ring in MTG HTS-magnet systems

被引：1

作者：

Postrekhin, EV

Zhou, LW

Liu, G

Cai, CB

Gong, SM

Fu, YX

机构：

[1] FUDAN UNIV,DEPT PHYS,SHANGHAI 200433,PEOPLES R CHINA

[2] RUSSIAN ACAD SCI,INST THERMOPHYS,EKATERINBURG 620219,RUSSIA

[3] ACAD SINICA,SHANGHAI INST MET,SHANGHAI 200050,PEOPLES R CHINA

来源：

PHYSICA C | 1997年 / 282卷

关键词：

D O I：

10.1016/S0921-4534(97)01414-7

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Superconducting levitating and rotating systems such as a levitated superconducting ball above a permanent ring magnet, and a levitated ball magnet above a superconducting MTG ring, have been investigated. It is shown that the dependence of the levitating force versus distance between levitated ball and ring has hysteresis and several maxima. Under AC magnetic field, the levitated ball sample oscillates stably at certain conditions. Amplitude-frequency curve has several maxima. At certain frequencies of AC magnetic field, the levitated ball begins to spin. The criteria of superconducting materials that suitable for stable gyro systems are given.

引用

页码：2649 / 2650

页数：2