Ionic cluster effect in suppression on superconductivity in Ni- and Co-doped YBCO systems
We adopted the x-ray diffraction, oxygen contents, positron annihilation technology as well as simulation
 methods to investigate systemically YBa₂Cu₃–x(Ni,Co)xO₇–δ (x = 0–0.5). The simulated results show
 that ions distribute in dispersive form in little doped concentration. As dope...
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| Published in: | Физика низких температур |
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| Date: | 2008 |
| Main Authors: | , , , , , , , , |
| Format: | Article |
| Language: | English |
| Published: |
Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України
2008
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| Subjects: | |
| Online Access: | https://nasplib.isofts.kiev.ua/handle/123456789/116855 |
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| Journal Title: | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| Cite this: | Ionic cluster effect in suppression on superconductivity
 in Ni- and Co-doped YBCO systems / Aihua Wang, Xiaoxia Wang, Yigang Cao, Xinli Li, Yongyong Wang,
 Liming Gao, Heqiang Lu, Jie Zhang, and Pinglin Li // Физика низких температур. — 2008. — Т. 34, № 3. — С. 219–224. — Бібліогр.: 23 назв. — англ. |
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Digital Library of Periodicals of National Academy of Sciences of Ukraine| Summary: | We adopted the x-ray diffraction, oxygen contents, positron annihilation technology as well as simulation
methods to investigate systemically YBa₂Cu₃–x(Ni,Co)xO₇–δ (x = 0–0.5). The simulated results show
that ions distribute in dispersive form in little doped concentration. As doped concentration increases, ions
combine into clusters in the crystal lattice. The calculated results and oxygen contents, together with the impure
phases and the local electron density ne, show the ionic cluster effect, which not only causes the local
electron density to reach the saturation, but also suppress the superconductivity significantly.
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| ISSN: | 0132-6414 |