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首页> 外文期刊>Physica, C. Superconductivity and its applications >Magnetic hysteresis loss in Bi-2223/Ag tapes with different filament arrangement
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Magnetic hysteresis loss in Bi-2223/Ag tapes with different filament arrangement

机译：具有不同灯丝排列的Bi-2223 / Ag胶带的磁滞损耗

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Hysteresis losses in perpendicular AC magnetic field were investigated experimentally on a set of six Bi-2223/Ag tapes with different filament architecture. Along with a monocore tape and a tape with overlapping filaments, tapes with filament arranged in less or more regular stacks, as well as a tape with filaments perpendicular to the tape wide face were tested. AC susceptibility technique was used, allowing to present the loss behavior in terms of two multiplicative parameters: the external susceptibility at low amplitudes, x(0) and the imaginary part of internal susceptibility, z". We show that both the filament stacking and its parallel orientation with respect to the applied field suppress x(0) leading to hysteresis loss reduction. However, the unconventional filament architecture was accompanied by imperfections of filament microstructure that broadened the susceptibility peak. Then, the loss reduction in these tapes was less than expected. In the temperature interval 77-95 K, excellent scaling of the susceptibility data was found, indicating the validity of the critical state model for these systems. (C) 2001 Elsevier Science B.V. All rights reserved. [References: 13]
机译：在一组六根具有不同灯丝结构的Bi-2223 / Ag胶带上，通过实验研究了垂直AC磁场中的磁滞损耗。除了单芯胶带和长丝重叠的胶带以外，还测试了长丝排列成较少或更多规则堆叠的胶带，以及长丝垂直于胶带宽面的胶带。使用交流磁化率技术，可以通过两个乘性参数来表示损耗行为：低振幅时的外部磁化率x（0）和内部磁化率的虚部z“。我们展示了灯丝堆叠及其相对于外加磁场的平行取向抑制了x（0）导致磁滞损耗的降低，但是，非常规的灯丝结构伴随着灯丝微观结构的缺陷，使磁化率峰变宽，因此，这些带的损耗降低小于预期。在77-95 K的温度区间中，发现磁化率数据的出色缩放，表明这些系统的临界状态模型的有效性（C）2001 Elsevier Science BV版权所有[参考文献：13]

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