4.2K直流背景场下Bi2223超导带材的交流损耗  

AC Loss in HTS Bi2223 Tapes at 4.2K under DC Applied Magnetic Field

作　　者：胡立发[1,2] A.Sulpice E.Mossang 李成山[1] 纪平[1] 吴怡芳[1] 冯勇[1] 张平祥[1] 周廉[1] 

机构地区：[1]西北有色金属研究院 [2]CRTBT of Centre National De La Recherche Scientifique,Grenoble France [3]CRTBT of Centre National De La Recherche Scientifique [4]LCMI of Centre National La Recherche Scientifique

出　　处：《稀有金属材料与工程》2003年第9期769-772,共4页Rare Metal Materials and Engineering

基　　金："973"项目(G1999064608)

摘　　要：研究了Bi2223高温超导带材在4.2K和外加直流背景场条件下的交流损耗。讨论了磁场、电流、基体电阻率、超导芯的数目等因素对交流损耗的影响。所有的测量都在4.2K下进行,外加磁场的幅值最大是5T,损耗的测量采用传输电流法。Experimentally determined AC loss in Bi2223 tapes at 4.2K under applied DC magnetic field is discussed. Considered are the influences on the seif-field loss of: (I) The applied DC field (2). The resistivity of the sheath material. (3) The critical current and the number of superconducting filaments. All of the experiments are performed at 4.2K and at appled magnetic fields of up to 5T.

关 键 词：BI2223 交流损耗 临界电流 直流磁场 

分 类 号：TM26[一般工业技术—材料科学与工程]