Irreversibility lines and pinning force density of aligned (Bi,Pb)(2)Sr2Ca2Cu3Ox single crystals

被引:5
作者
Chu, SY
McHenry, ME
机构
[1] Dept. of Mat. Sci. and Engineering, Carnegie Mellon University, Pittsburgh
关键词
D O I
10.1109/77.620695
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
DC Magnetic properties of aligned (Bi,Pb)(2)Sr2Ca2Cu3Ox single crystals have been measured for the first time using SQUID magnetometer in field up to 5 T and in the temperature range from 5 K to 150 K. The results confirm the existence of a broad temperature and field regime with completely reversible magnetization for these crystals. The temperature dependence of the irreversibility field H*(T) is determined from both M-H and M-T curves with fields oriented perpendicular to the ab plane of the crystal lattice. A strong field dependence of critical current density has been observed in these pristine single crystals with very weak pinning. These observations emphasize the importance of artificially introducing pinning sites in BSCCO material used for applications, Non-linear scaling models have been used to fit our experimental results to estimate the elemental pinning force density and the effective pinning potential.
引用
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页码:1150 / 1153
页数:4
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