Characterization of Individual Filaments in a Multifilamentary YBCO Coated Conductor
Characterization of Individual Filaments in a Multifilamentary YBCO Coated Conductor
复制标题
多丝 YBCO 涂层导体中单丝的表征
DOI：
10.1109/tasc.2007.898266
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发表时间：
2007
影响因子：
1.8
通讯作者：
G. Levin
中科院分区：
文献类型：
--
作者：
M. Polák;J. Kvitkovic;P. Mozoła;P. Barnes;G. Levin
宽YBCO涂层导体带的条纹是必要的，以减少磁滞损耗。然而，用于使膜条纹化的工艺不仅通过简单地去除超导材料，而且通过引入额外的缺陷，可能不利地影响带材的总临界电流。研究了Hastelloy基片上YBCO超导带材单根细丝的输运性质。该带由24根0.5mm宽的平行细丝组成，由薄Ag层覆盖。在77 K温度下，测量了9 cm长灯丝截面上的I-V曲线以及临界电流沿着方向的变化。24个灯丝中的8个通过临界电流的平均值和相关的n值进行实验表征。最好的灯丝在1微伏/厘米和B = 0时具有约7 A的临界电流。
Striation of wide YBCO coated conductor tapes is necessary to reduce the hysteresis losses. However, the processes used to striate the films may adversely affect the overall critical current of the tape not only by simple removal of superconducting material, but by introducing additional defects. We studied the transport properties of individual filaments of a filamentary YBCO tape on Hastelloy substrate striated by laser ablation. The tape consisted of 24 parallel filaments 0.5 mm wide, covered by thin Ag layer. I-V curves on 9 cm long filament sections as well as the changes of the critical current along the filament were measured at 77 K in magnetic fields up to 70 mT. 8 of 24 filaments were experimentally characterized by the mean value of the critical current and the associated n-value. The best filament had a critical current of ~7 A at 1 microvolt/cm and B = 0.
影响因子：
1.8
作者：
N. Amemiya;K. Yoda;S. Kasai;Zhenan Jiang;G. Levin;P. Barnes;C. Oberly
通讯作者：
N. Amemiya;K. Yoda;S. Kasai;Zhenan Jiang;G. Levin;P. Barnes;C. Oberly