MAGNETIC IRREVERSIBILITY IN YBA2CU3O7-DELTA/AG NONRANDOM COMPOSITES

被引：3
|
作者：
SCHAF, J
RODRIGUES, P
GHIVELDER, L
PUREUR, P
REICH, S
机构：
[1] UNIV FED RIO GRANDE SUL,INST FIS,BR-91501970 PORTO ALEGRE,RS,BRAZIL
[2] FED UNIV RIO DE JANEIRO,INST FIS,BR-21945970 RIO JANEIRO,BRAZIL
[3] WEIZMANN INST SCI,DEPT MAT RES,IL-76100 REHOVOT,ISRAEL
来源：
PHYSICA C | 1995年 / 247卷 / 3-4期
关键词：
D O I：
10.1016/0921-4534(95)00182-4
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
We report on magnetic irreversibility and Meissner flux expulsion data of YBa2Cu3O7-delta/Ag nonrandom composites, having 0, 6, 11 and 23 wt.% Ag. While T-c remains practically unaltered, we observed a strong decrease in the fractional flux expulsion upon silver addition. On the contrary, the ZFC-FC magnetic irreversibility line scarcely changes in the composites when compared to that of the pure compound. This indicates that the irreversibility line depends only weakly on the granularity at the crystallite level.
引用
收藏
页码：376 / 380
页数：5
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