Preparation and properties of Bi(Pb, Sb)-Sr-Ca-Cu-O superconductors
| Autor: | P. Vašek, D. Sykorova, O Smrckova, R Kuchar |
|---|---|
| Rok vydání: | 1995 |
| Předmět: |
Superconductivity
Materials science Dopant Annealing (metallurgy) Transition temperature Metals and Alloys Analytical chemistry Condensed Matter Physics Magnetic susceptibility Electrical resistivity and conductivity Materials Chemistry Ceramics and Composites K-alpha Electrical and Electronic Engineering |
| Zdroj: | Superconductor Science and Technology. 8:219-222 |
| ISSN: | 1361-6668 0953-2048 |
| DOI: | 10.1088/0953-2048/8/4/004 |
| Popis: | The influence of Pb and Sb dopants on the properties of Bi-based high-temperature superconductors was systematically investigated. The samples with nominal composition BiaPbbSbcSr4Ca5Cu7O (a+b+c=3.6-4.4; b=0.2-0.8; c=0.1-0.6) were prepared and characterized by DTA, XRD analysis, resistivity and susceptibility measurements. Our results showed that the addition of a small amount of Sb for a constant or decreasing concentration of Pb has little influence on Tc but suppresses T0. The important characteristic of this system is the presence of a new phase for higher concentrations of Sb with strong reflections near 2 Theta =35 degrees (Cc K alpha ) in the XRD pattern. |
| Databáze: | OpenAIRE |
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