高温超导体Bi-2223复合带材剩余磁场测量研究  

MEASUREMENT OF TRAPPED MAGNETIC FIELD STRENGTH FOR HIGH T_c Bi-2223 TAPE

作　　者：栾文洲[1] 段镇忠[1] 王媛[1] 周其[1] 冯日宝[1] 姚永勋[1] 杜风贞[1] 李月南[1] 

机构地区：[1]北京有色金属研究总院,北京100088

出　　处：《低温物理学报》2003年第A01期139-141,共3页Low Temperature Physical Letters

基　　金：国家重大科技项目 (编号 :NKBRST G19990 646)资助的课题~~

摘　　要：本文首次用一维霍尔探头阵列测试了铋系高温超导带材的剩余磁场 .通过剩余磁场与临界电流的关系可以进一步换算出带材的临界电流 ,实现对带材传输性能的无损、无接触测量 ,为今后长带的连续检测提供重要的测试手段 .磁测量能更准确、更全面的反映带材的本征特性 ,是今后高温超导带材性能测试的重要方法 .In this article, the trapped magnetic field strength of High T-c Bi-2223 tape was measured using Hall probes array. According to the relationship between critical current and the trapped magnetic strength, the I-c of the tape can been easily calculated, this make it possible to realize the non-destruction, non-contact measurement for the future long tape continuous measurement. The magnetic strength measurement can reflect the tape′s original characteristic more accurately and more entirely, which is the important method for the measurement of High T-c tape′s properties.

关 键 词：高温超导 铋2223超导带材 剩余磁场测量 临界电流 传输性能 霍尔探头 

分 类 号：O513[理学—低温物理]