Effects of annealing treatments on the superconducting properties of melt-processed YBCO doped with Ni
| Autor: | Konstantin Nenkov, L. Shlyk, Gernot Krabbes, B. Schüpp, G. Fuchs |
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| Rok vydání: | 2004 |
| Předmět: |
Superconductivity
Flux pinning Materials science Dopant Condensed matter physics Annealing (metallurgy) Doping Metals and Alloys Analytical chemistry Condensed Matter Physics Oxygen atmosphere Condensed Matter::Materials Science Condensed Matter::Superconductivity Materials Chemistry Ceramics and Composites Superconducting transition temperature Electrical and Electronic Engineering Oxygen content |
| Zdroj: | Superconductor Science and Technology. 18:S10-S14 |
| ISSN: | 1361-6668 0953-2048 |
| Popis: | To optimize the superconducting properties of Ni-doped YBCO by selective substitution of Ni dopants on Cu(2) plane sites, the effects of annealing treatments in reduced oxygen atmosphere have been studied. The results indicate that the superconducting transition temperature, Tc, of the Ni-doped samples with optimal oxygen content further decreases after heat treatment in reduced oxygen atmosphere. This suggests that substituted Ni at the Cu(1) sites moves to the Cu(2) sites. However, the flux pinning capabilities of the sample optimally doped with Ni after heat treatment in reduced O2 atmosphere are weaker compared to melt-processed YBCO doped with Li or Zn. |
| Databáze: | OpenAIRE |
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