论文部分内容阅读
通过对方形永磁体和方形辅助永磁体在液氮温度下对GdBCO超导体磁化后超导磁悬浮力的测量,研究了两种组态中方形辅助永磁体对超导体的磁化方式对单畴GdBCO超导块材磁场分布及其磁悬浮力的影响.结果发现,方形辅助永磁体的下表面和超导体上表面保持在同一个水平面上,磁化进程中方形辅助永磁体在GdBCO超导体上表面水平面内沿直径方向的位置x从15 mm增加到+15 mm时,超导磁悬浮力大小与超导体的磁化方式有着密切关系(以Z=0.1 mm为例):1)当方形辅助永磁体N极垂直向上且场冷后去掉辅助永磁体时,超导体最大磁悬浮力先从16.7 N增大到23.1 N,再减小到16.6 N;2)当方形辅助永磁体N极垂直向下且场冷后去掉辅助永磁体时,超导体最大磁悬浮力先从17.7 N减小到7 N,再增加到17.6 N;3)两种组态中最大磁悬浮力不相等,而且与零场冷下的最大磁悬浮力(17.1 N)也不同.这些结果说明:只有通过科学合理地设计超导体和永磁体的组合方式,才能获得较高的磁场强度,有效地提高超导体的磁悬浮力特性,该结果对促进超导体的应用具有重要的指导意义.
By measuring the superconducting magnetic levitation force of the GdBCO superconductors at the liquid nitrogen temperature after the square permanent magnets and the square auxiliary permanent magnets are magnetized, the influence of the magnetization modes of the superconductors on the superconducting monolithic GdBCO superconducting mass The results show that the lower surface of the square auxiliary permanent magnet and the upper surface of the superconductor are kept in the same horizontal plane and the position of the square auxiliary permanent magnet in the diameter direction in the upper surface of the GdBCO superconductor in the magnetization process When x is increased from 15 mm to +15 mm, the superconducting magnetic levitation force is closely related to the magnetization mode of the superconductor (taking Z = 0.1 mm as an example): 1) When the square auxiliary permanent magnet with the N pole vertically upward and the field cold When supporting the permanent magnets, the maximum magnetic levitation force of the superconductor increases from 16.7 N to 23.1 N and then decreases to 16.6 N. 2) When the square of the auxiliary permanent magnet is vertically downward and the auxiliary permanent magnet is removed after field cooling, the maximum superconductor The magnetic levitation force decreases from 17.7 N to 7 N and then increases to 17.6 N. 3) The maximum magnetic levitation force in both configurations is not equal and is also different from the maximum magnetic levitation force (17.1 N) at zero field cooling.These results Description: By design there are combinations of permanent magnets and superconductors scientific and rational way, in order to obtain a higher magnetic field strength, effectively improve the properties of superconductor levitation force, the results have important implications for the promotion of superconductor applications.