Surface resistance measurement of superconducting YBa2Cu3O7 in a magnetic field
Open Access
- 1 August 1990
- journal article
- Published by Springer Nature in Journal of Materials Research
- Vol. 5 (8) , 1599-1604
- https://doi.org/10.1557/jmr.1990.1599
Abstract
We report on the magnetic-field dependent surface resistance of polycrystalline YBa2Cu3O7 (Tc ≃ 92 K), measured using a brass cylindrical cavity resonator, operating at 16.5 GHz in the TE011 mode. A de magnetic field Happ is applied parallel to the superconducting sample surface, and the temperature dependence of the surface resistance is measured for four different values of Happ (0 T, 0.22 T, 1 T, 5 T). An effective medium theory and the two-fluid model are used to fit the surface resistance versus temperature measurements both in zero field and for various applied fields. These results are applied to characterize the microwave properties of a polycrystalline ceramic superconductor.Keywords
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