摘要
Bi-2212高温超导线是目前高温超导材料中唯一可以制成圆线的超导材料,这为使用其绞制超导电缆,制备CICC导体提供了可能性。因此,需要研究其各种性能,为今后导体设计和运行参数设定提供依据。临界电流和n值是衡量超导线性能的主要参数,采用四引线法测量了西北有色金属研究院使用粉末穿管法(PIT)制备的Bi-2212超导线在0-12T背景磁场中临界电流和n值,用Asterisk给出的定标率公式对临界电流随磁场变化率关系进行了拟合并加以分析。
Bi2212 high temperature superconductor is the only superconducting material that can be made into round -wire currently, which makes it possible to develop a CICC （ Cable - In - Conduit Conductor）. Therefore, it is important to study its per- formances, which could provide the foundation for the conductor design and operation in the future. The critical current and n val- ues are the main parameters of superconducting strand. In this paper, one kind of PIT Bi -2212 Ag - Ag/Mg base round wire de- veloped by NIN was measured with different back ground. The results are fitted and analyzed with Asterisk scaling law.
出处
《低温与超导》
CAS
北大核心
2016年第1期21-23,40,共4页
Cryogenics and Superconductivity
关键词
高温超导
BI-2212
临界电流密度
n值
High temperature superconductor, Bi - 2212, Critical current, n value
