Study of higher-order harmonics of complex ac susceptibility in YBa2Cu3O7-δ thin films by the mutual inductive method

被引：3

作者：

Perez, Israel ^{[1
]}

Sosa, Victor ^{[1
]}

Gamboa, Fidel ^{[1
,2
]}

机构：

[1] Cinvestav Unidad Merida, Dept Appl Phys, Merida 97310, Yucatan, Mexico

[2] SC CIMAV, Ctr Invest Mat Avanzados, Dept Phys Mat, Chihuahua, Mexico

来源：

PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS | 2010年 / 470卷 / 22期

关键词：

Mutual inductive method; Harmonics; Thin films; CRITICAL-CURRENT DENSITY; SUPERCONDUCTOR DISKS; MAGNETIC-FIELD; FLUX-CREEP;

D O I：

10.1016/j.physc.2010.09.014

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We have applied the mutual inductive method to study higher-order harmonics of complex ac susceptibility chi(n) = chi(n)' - i chi(n)'' for YBa2Cu3O7-delta thin films as function of the temperature and the applied magnetic field. The experimental results were compared with analytical and numerical results obtained from the Ishida-Mazaki model and the solution of the integral equation for the current density, respectively. Both models allow us to reproduce the main experimental features, however, as n increases the numerical model shows notable discrepancies. This failure can be attributed to the current voltage characteristics. Also this investigation yields the activation energy U-c and the critical current density J(c) both at T = 0 for two samples. (C) 2010 Elsevier B.V. All rights reserved.

引用

页码：2061 / 2066

页数：6

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