AC LOSSES IN SINTERED HIGH-TEMPERATURE SUPERCONDUCTORS - DEPENDENCE ON FREQUENCY AND INTERGRANULAR LOWER CRITICAL-FIELD

被引:9
|
作者
LOFLAND, S [1 ]
HUANG, MX [1 ]
BHAGAT, SM [1 ]
机构
[1] UNIV MARYLAND,CTR SUPERCONDUCT RES,COLL PK,MD 20742
来源
PHYSICA C | 1992年 / 203卷 / 3-4期
关键词
D O I
10.1016/0921-4534(92)90033-9
中图分类号
O59 [应用物理学];
学科分类号
摘要
The intergranular AC susceptibility loss peak in high-T(c) superconductors is measured as a function of frequency and field amplitude. The variation of peak temperature with frequency is strongly influenced by the grain size. For large grains, the maximum loss increases with field amplitude. This is ascribed to a non-zero intergranular lower critical field H(cl).
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页码:271 / 276
页数:6
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