本文研究了Bi2223高温超导带材在自场和77K温度下,局部临界电流的统计特性对整根长样带材临界电流特性的影响.一般地,超导带材的I～V特性由标准的幂指数模型参数Ic和n值来描述,并以1μV/cm作为临界电流的判据;通过测量局部带材的临界电流I～V特性,得到了整根带材的临界电流特性;并通过统计方法,得到了局部带材临界电流分布的高斯几率分布函数.结果表明,带材局部临界电流分布不均匀,局部临界电流的变化对整个带材的临界电流影响很大;并用统计学的方法对长样带材的临界电流性能进行了分析和讨论.
参考文献
| [1] | Nobuya Banno;Naoyuki Amemiya;Akihiko Mihoichi;Marian Ciszek;Hidehito Mukai;Kazuya Ohmatsu .Penetration loss in BSCCO tape without transport current[J].IEEE Transactions on Applied Superconductivity: A Publication of the IEEE Superconductivity Committee,1999(2 Pt.2):2565-2568. |
| [2] | P Kovàc;T Mellsek;I Husek .[J].CRYOGENICS,1997(37):177. |
| [3] | A Oota;M Tanaka;KFujikawa .[J].IEEE Transactions on Applied Superconductivity,1997,7(07):2106. |
| [4] | Thomas Staiger;Günter;Peter Verges;Klaus Fisher and Ludwig Schulu .[J].IEEE Transactions on Applied Superconductivity,1997,7(07):1347. |
| [5] | A P Malozemoff ."Flux Creep in High Temperature Superconductors"[J].PHYSICA C,1991,185:264. |
| [6] | M. D. Bentzon;P. Vase .Critical current measurements on long BSCCO tapes using a contact-free method[J].IEEE Transactions on Applied Superconductivity: A Publication of the IEEE Superconductivity Committee,1999(2 Pt.2):1594-1597. |
| [7] | Bennie ten Haken;Rob A M Budde;herman HJten Kate .Continuous Recording of the Tansport Properties of a Superconducting Tape Using an AC Magnetic Field Technique[J].IEEE Transactions on Applied Superconductivity,1999,9(09):11606. |
| [8] | 胡立发,周廉,李成山,郑会玲,段镇忠,张平祥.带阻挡层的Bi2223/Ag高温超导带材的临界电流与磁滞损耗[J].低温物理学报,2001(03):222-228. |
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