Pulse field magnetization of melt-processed Sm-Ba-Cu-O
Pulse field magnetization of melt-processed Sm-Ba-Cu-O
复制标题
熔融加工 Sm-Ba-Cu-O 的脉冲场磁化
DOI：
10.1088/0953-2048/13/6/345
复制
发表时间：
2000
影响因子：
3.6
通讯作者：
U. Mizutani
中科院分区：
文献类型：
--
作者：
H. Ikuta;H. Ishihara;Tetsuhisa Hosokawa;Y. Yanagi;Y. Itoh;M. Yoshikawa;T. Oka;U. Mizutani
研究了77 K下磁脉冲驱动下熔融Sm-Ba-Cu-O（SmBCO）超导体中磁通线的动力学运动。捕获磁通量的总量（ΦT）作为脉冲幅度的函数表现出一个峰值;大脉冲的ΦT的减小归因于由于施加在移动磁通线上的阻力而导致的样品温度的升高。结果表明，与Y-Ba-Cu-O样品相比，SmBCO样品中磁通线的穿透需要更大的脉冲，反映了SmBCO的强钉扎效应。
We studied the dynamical motion of flux lines in melt-processed Sm-Ba-Cu-O (SmBCO) bulk-superconductors driven by a magnetic pulse at 77 K. The total amount of trapped magnetic flux (ΦT) as a function of the magnitude of pulse exhibited a peak; the decrease of ΦT for large pulses is attributed to the increase in temperature of the sample due to the resistive force exerted on moving flux lines. Compared to melt-processed Y-Ba-Cu-O, it is found that the penetration of flux lines into the sample requires a larger pulse, reflecting the strong pinning effect of SmBCO.