The Fe influence on the vortex response to the AC field in bulk (Bi,Pb):2223 superconductor

被引：1
|
作者：
Pop, AV [1 ]
机构：
[1] Univ Babes Bolyai, Fac Phys, R-3400 Cluj Napoca, Romania
来源：
MODERN PHYSICS LETTERS B | 1998年 / 12卷 / 27期
关键词：
D O I：
10.1142/S021798499800130X
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
The effect of Fe3+ ions on the inter- and intragranular Tp and Tg temperatures of the imaginary peaks of the AC susceptibility has been studied for a (Bi, Pb):2223 superconductor. The linear dependencies of T-p and T-g as a function of AC field amplitude agree with Muller critical state model. The Fe3+ ions induced a fast decrease of inter and intragranular pinning force densities. The intergrain critical current density J(cj) calculated from X"(T) curve is lower in x = 0.02 Fe doped sample than in x = 0.09 sample. J(cj)(T) dependence near T-c agrees with the assumption of SNS intergrain junctions.
引用
收藏
页码：1117 / 1124
页数：8
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