Current capability of filaments depending on their position in (Bi,Pb)2Sr2Ca2Cu3O10+δ ‐multifilament tapes
Current capability of filaments depending on their position in (Bi,Pb)2Sr2Ca2Cu3O10+δ ‐multifilament tapes
复制标题
细丝的电流能力取决于它们在 (Bi,Pb)2Sr2Ca2Cu3O10+δ 复丝带中的位置
DOI：
10.1063/1.117633
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发表时间：
1996
影响因子：
4
通讯作者：
H. Neumüller
中科院分区：
文献类型：
--
作者：
T. Schuster;H. Kuhn;A. Weißhardt;H. Kronmüller;B. Roas;O. Eibl;M. Leghissa;H. Neumüller
采用偏振光显微镜和扫描电子显微镜研究了银包套（Bi，Pb）₂Sr₂Ca₂Cu₃O₁₀₊δ多丝超导带材单丝的微观结构。发现丝材的微观结构因其在带材横截面中的位置不同而存在很大差异。通过磁光法研究了这种微观结构对临界电流密度的影响。观察到与带材中心的丝材相比，外部丝材的临界电流密度急剧降低，约为中心丝材的1/10。
The microstructures of single filaments of silver‐sheathed (Bi,Pb)2Sr2Ca2Cu3O10+δ‐multifilament tapes are investigated by polarized light and scanning electron microscopy. Large differences in the microstructure of filaments depending on their position in the cross section of the tape are found. The influence of this microstructure on the critical current density is investigated by magneto‐optics. A drastic reduction of the critical current density by a factor of about 10 of the outer, compared to the filaments in the center of the tape is observed.