AC susceptibility with superimposed DC magnetic field in a current biased granular High Tc superconductor

被引：0
|
作者：
Codner, G. [1 ]
Ferrari, H. [1 ]
Acha, C. [1 ,2 ]
Bekeris, V. [1 ]
Levy, P. [2 ]
机构：
[1] FCEN UBA, Lab Bajas Temp, RA-1428 Cap Fed, DF, Argentina
[2] Comis Nacl Energia Atom, Div Fis Solido, RA-1429 Cap Fed, DF, Argentina
来源：
PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS | 1994年 / 235-40卷
关键词：
D O I：
10.1016/0921-4534(94)91140-1
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
We have investigated the effect in AC magnetic susceptibility, chi(ac) = chi' + j chi '', of both DC transport current, J(t), and DC magnetic field, H-dc, in polycristalline HTSC. Two regimes are observed: at low DC fields critical state is modified by the current self field; but as H-dc is increased, J(t) becomes dissipative (V-dc not equal 0) and chi(ac) is determined by the sample's "resistance".
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页码：3227 / 3228
页数：2
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