Ac susceptibility in melt-processed Nd-Ba-Cu-O superconductor

被引：0

作者：

Inoue, K ^{[1
]}

Waki, K ^{[1
]}

Murakami, M ^{[1
]}

机构：

[1] ISTEC, SRL, Minato Ku, Tokyo 1050023, Japan

来源：

ADVANCES IN SUPERCONDUCTIVITY XII | 2000年

关键词：

third harmonic ac susceptibility; secondary peak effect; field-induced pinning; n value;

D O I：

暂无

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Magnetic properties of the melt-processed Nd-Ba-Cu-O superconductor have been investigated with the third harmonic ac susceptibility (chi(3)) The critical current density (J(c)) evaluated from chi(3) decreased with decreasing the frequency accompanied by the shift of the secondary peak towards the lower field. The E-J characteristics are obtained from the frequency dependence of chi(3) and the magnetic relaxation measurement. On the assumption of the power law E similar to J(n), we found that the field which gives the peak n value was the same for both measurements. This suggests that the field-induced pinning is the most effective near this field.

引用

页码：356 / 358

页数：3

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