Superconductivity of barium-doped Bi2Sr2CaCu2O y
| Autor: | Airton Martin, M. J. G. Lee, Beifang Yang, J. M. Perz |
|---|---|
| Rok vydání: | 1996 |
| Předmět: |
Quenching
Superconductivity Materials science Physics and Astronomy (miscellaneous) Annealing (metallurgy) Doping Analytical chemistry chemistry.chemical_element Barium Sintered ceramic Condensed Matter Physics Electronic Optical and Magnetic Materials chemistry Electrical resistivity and conductivity visual_art visual_art.visual_art_medium Ceramic |
| Zdroj: | Journal of Superconductivity. 9:161-165 |
| ISSN: | 1572-9605 0896-1107 |
| DOI: | 10.1007/bf00728296 |
| Popis: | Sintered ceramic samples of Bi2Sr2−xBaxCaCu2Oy with nominal barium fraction 0≤x≤0.3 have been prepared by the solid-state reaction method. WDS studies verified that barium enters the superconducting phase. For slowly cooled samples, the midpointTc of the superconducting transition is significantly increased by barium doping, whereas for quenched samplesTc is little affected. The increase ofTc with increasing barium fraction is consistent with a decrease in the hole concentration in the superconducting layers. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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