Irreversibility Field and Upper Critical Field in YBa2Cu3O7-{\delta} thin film

2020 
We present a detailed study of the electrical transport properties of YBa2Cu3O7-{\delta} thin film. The irreversibility fields ({\mu}_0 H_irr), upper critical fields ({\mu}_0 H_C2), penetration depths ({\lambda}) and coherence lengths ({\xi} ) of the YBa2Cu3O7-{\delta} materials are deduced from the resistivity curves. Itis observed that {\mu}_0 H_irr, {\mu}_0 H_C2 and {\Delta}Tc of the film strongly depend on the direction and strength of the field. The coherence length {\xi} (0) and penetration depth {\lambda} (0) values at T = 0 K has been calculated from the irreversibility fields ({\mu}_0 H_irr) and upper critical fields ({\mu}_0 H_C2) respectively. Based on all the results, the change of the superconducting properties as a function of the magnetic field direction presents the anisotropy of the sample produced.
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