AC loss measurement with a phase difference between current and applied magnetic field
AC loss measurement with a phase difference between current and applied magnetic field
复制标题
利用电流和外加磁场之间的相位差测量交流损耗
DOI：
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发表时间：
2005
影响因子：
1.8
通讯作者：
J. Schwartz
中科院分区：
文献类型：
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作者：
D. Nguyen;P. Sastry;G.M. Zhang;D. Knoll;J. Schwartz
本文用电磁法和量热法测量了Bi/sub 2/Sr/sub 2/Ca/sub 2/Cu/sub 3/O/sub y/（Bi-2223）多组分银包带的交流损耗与传输电流、外加磁场和频率的关系。两种方法的计算结果吻合较好。用量热法研究了输运电流和外加电场之间的相位差对总交流损耗的影响。当施加的磁场垂直于样品表面时，总损耗随/spl Delta//spl phi/显著变化。在平行磁场作用下，/spl Delta//spl phi/对总损耗的影响较小。
Total AC losses in multi-filamentary, silver-sheathed Bi/sub 2/Sr/sub 2/Ca/sub 2/Cu/sub 3/O/sub y/ (Bi-2223) tape were measured as functions of transport current, applied magnetic field and frequency by electromagnetic and calorimetric methods. Results of both methods agree well with each other. The calorimetric method was employed to investigate the effect of the phase difference between transport current and applied field, /spl Delta//spl phi/, on total AC loss. Total loss changes significantly with /spl Delta//spl phi/ when applied magnetic field is perpendicular to the surface of the sample. The effect of /spl Delta//spl phi/ on total loss in parallel magnetic applied field is smaller.