AC susceptibility of YBaCuO-Ag composites

被引：4
|
作者：
Ghivelder, L. [1 ]
Abrego Castiilo, I. [1 ]
Pimentel, L. M. [1 ]
Pureur, P. [2 ]
Schilling, O. F. [3 ]
机构：
[1] UFRJ, Inst Fis, BR-21945970 Rio De Janeiro, RJ, Brazil
[2] UFRGS, Inst Fis, BR-91501970 Porto Alegre, RS, Brazil
[3] UFSC, Dept Fis, BR-38040900 Florianopolis, SC, Brazil
来源：
PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS | 1994年 / 235-40卷
关键词：
D O I：
10.1016/0921-4534(94)91137-1
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
We have performed measurements of chi' and chi '' in YBaCuO-Ag nonrandom composites. Results of chi' vs. temperature show a strong reduction of intra-granular shielding in the superconducting composites. Cooling the samples in large superimposed DC fields, measurements of chi' and chi '' at fixed temperatures as a function of AC field can be fitted with a modified critical state model. This description gives an interpretation for our results in terms of a reduction of the superconducting volume fraction in the composite samples.
引用
收藏
页码：3221 / 3222
页数：2
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