Critical Currents of (Bi1−x Pb x )2Sr2Ca2Cu3O y (x = 0.2 and 0.4) Films Deposited on Silver Substrate by Sedimentation
| Autor: | R. Zalecki, Łukasz Gondek, W. M. Woch, J. Niewolski, M. Kowalik, W. Tokarz |
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| Rok vydání: | 2017 |
| Předmět: |
Josephson effect
Materials science Condensed matter physics Sedimentation (water treatment) Analytical chemistry 02 engineering and technology Substrate (electronics) 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences Electronic Optical and Magnetic Materials 0103 physical sciences Strong coupling Absorption (chemistry) Sedimentation process 010306 general physics 0210 nano-technology Dispersion (chemistry) |
| Zdroj: | Journal of Superconductivity and Novel Magnetism. 30:2387-2391 |
| ISSN: | 1557-1947 1557-1939 |
| Popis: | The (Bi1−x Pb x )2Sr 2Ca 2Cu 3 O y (x = 0.2, 0.4) films were obtained directly on silver substrates by the sedimentation process. The temperature dependencies of the AC susceptibility of the films and bulk materials were measured and analyzed. The critical temperatures of the grains T cg as well as the Josephson junctions T cJ of these films were obtained from the dispersion part of AC susceptibility and they are T cg = 106.5 K, T cJ = 100.2, T cg = 106.1 K, and T cJ = 97 K, respectively. The thickness of these films is of the order of a hundred micrometers. The critical currents were derived from the absorption part of AC susceptibility using the Bean’s critical state model. The temperature dependencies of the critical currents were analyzed using the Ginzburg–Landau strong coupling limit approach. |
| Databáze: | OpenAIRE |
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