| Autor: | G. M. Kaleva, S. G. Prutchenko, K. I. Furaleva, E. D. Politova |
|---|---|
| Rok vydání: | 2001 |
| Předmět: |
Materials science
General Chemical Engineering Metals and Alloys chemistry.chemical_element Mineralogy Barium Yttrium Microstructure Inorganic Chemistry chemistry.chemical_compound chemistry Chemical engineering Electrical resistivity and conductivity visual_art Barium titanate Materials Chemistry visual_art.visual_art_medium Cuprate Ceramic Solid solution |
| Zdroj: | Inorganic Materials. 37:71-76 |
| ISSN: | 0020-1685 |
| DOI: | 10.1023/a:1026793528950 |
| Popis: | Fine-particle BaTiO3 and TiO2 additions are shown to have a significant effect on the structure, microstructure, and superconducting properties of YBa2Cu3O7 – δ ceramics prepared via partial melting. The ranges of solid solutions are determined. The additions are found to enhance the critical current density by a factor of 1.5–2.5. X-ray microanalysis of individual grains in the doped ceramics indicates an increased concentration of small inclusions, presumably Y2BaCuO5 , embedded in superconducting grains and acting as pinning sites. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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