Synthesis and characterization of Y-Ba-Cu-O and Bi(Pb)-Sr-Ca-Cu-O superconductors from the oxine co-precipitation method
| Autor: | Kanika Nagpal, R. B. Tripathi, S. U. M. Rao, B. K. Das, G.K. Padam, Indu Dhingra, Deepti Suri, V Raman |
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| Rok vydání: | 1991 |
| Předmět: |
chemistry.chemical_classification
Superconductivity High-temperature superconductivity Coprecipitation Scanning electron microscope Analytical chemistry Condensed Matter Physics Microstructure law.invention chemistry law X-ray crystallography General Materials Science Inorganic compound Stoichiometry Nuclear chemistry |
| Zdroj: | Journal of Physics: Condensed Matter. 3:4269-4279 |
| ISSN: | 1361-648X 0953-8984 |
| Popis: | Oxide superconductors in the Y-Ba-Cu-O and Bi(Pb)-Sr-Ca-Cu-O systems with Tc degrees of 93.6 K and 115 K, respectively, have been prepared by the co-precipitation process via the oxine route using nitrates as the starting materials. Chemical homogeneity, stoichiometry and fine particles of the precursor obtained by this process permit a relatively short time for the production of Y- and Bi-based superconducting compounds compared with that obtained by the conventional solid state reaction method. The resulting densities of the sintered samples were typically greater than 90%. X-ray diffraction analysis, energy dispersive spectral analysis and scanning electron microstructural analysis are also reported in this study. |
| Databáze: | OpenAIRE |
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