Angular dependence of the dynamic resistance and its relation to the AC transport current loss in Bi-2223/Ag tape superconductors
Angular dependence of the dynamic resistance and its relation to the AC transport current loss in Bi-2223/Ag tape superconductors
复制标题
Bi-2223/Ag 带超导体中动态电阻的角度依赖性及其与交流传输电流损耗的关系
DOI：
10.1088/0953-2048/15/8/318
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发表时间：
2002
影响因子：
3.6
通讯作者：
H. Kate
中科院分区：
文献类型：
--
作者：
M. Ciszek;H. G. Knoopers;J. Rabbers;B. T. Haken;H. Kate
Bi2Sr2Ca2Cu3O10/Ag 超导带中的动态电阻损耗、直流传输电流与外部交流磁场的结合被测量为外部交流磁场方向的函数。我们研究了通过更简单的动态电阻测量来描述外部施加的交流磁场中的交流传输电流损耗的可能性。磁场相对于磁带平面的方向角从 0°（垂直配置）更改为 90°（平行配置）。动态电阻能量耗散的角度依赖性用经验公式描述。它与观察到的磁滞损耗的角度依赖性非常相似。基于临界状态模型的理论预测很好地描述了平行和垂直施加磁场中的动态电阻。由于同时施加交流磁场而导致的交流传输电流损耗的增加可以用完全饱和状态下的动态电阻很好地描述。
The dynamic resistance loss, DC transport current combined with external AC magnetic field, in a Bi2Sr2Ca2Cu3O10/Ag superconducting tape is measured as a function of the orientation of the external AC magnetic field. We investigate the possibility of describing the AC transport current loss in an externally applied AC magnetic field from the much simpler dynamic resistance measurement. The orientation angles of the magnetic field with respect to the plane of the tape are changed from 0° (perpendicular configuration) to 90° (parallel configuration). The angular dependence of the dynamic resistance energy dissipation is described with an empirical formula. It is very similar to the angular dependence observed for the hysteresis loss. The dynamic resistance in parallel and perpendicular applied magnetic field is fairly well described with theoretical predictions based on the critical state model. The increase of the AC transport current loss due to a simultaneously applied AC magnetic field is described quite well with the dynamic resistance in the fully saturated state.