Influence of thermomechanical treatment on critical currents in Ag-sheathed BSCCO-2223 tapes
| Autor: | D.J. Brauer, A. Gladun, D. Busch, R. Eujen, J. Hudepohl |
|---|---|
| Rok vydání: | 1992 |
| Předmět: |
chemistry.chemical_classification
Superconductivity High-temperature superconductivity Materials science Annealing (metallurgy) Analytical chemistry General Physics and Astronomy Magnetic susceptibility law.invention Magnetic field chemistry law Electromagnetic shielding Shielding effect General Materials Science Inorganic compound |
| Zdroj: | Cryogenics. 32:1052-1055 |
| ISSN: | 0011-2275 |
| DOI: | 10.1016/0011-2275(92)90026-7 |
| Popis: | BSCCO-2223 tapes have been produced by the ‘powder-in-tube’ method with reproducible critical current densities of > 1 × 10 4 A cm −2 at 77 K and 5 × 10 4 A cm −2 at 4.2 K. Superconductivity at 77 K was retained in fields o fup to 7 T. The influence of mechanical treatments (e.g. drawing, rolling and pressing) as well as that of different annealing processes has been investigated. In addition to the determination of critical currents, a.c. shielding measurements have been used to verify the quality of intergrain contacts. The temperature dependence of j c between 4.2 and 80 K has been studied while the field ( H | c ; H ⊥ c with H | or ⊥ l ) was varied from 0 to 8 T. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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