Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1819215 | Physica C: Superconductivity and its Applications | 2010 | 6 Pages |
Abstract
We have applied the mutual inductive method to study higher-order harmonics of complex ac susceptibility Ïn=Ïnâ²âiÏnâ³ for YBa2Cu3O7âδ 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 Uc and the critical current density Jc both at T = 0 for two samples.
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Physical Sciences and Engineering
Physics and Astronomy
Condensed Matter Physics
Authors
Israel Pérez, VÃctor Sosa, Fidel Gamboa,