Positron annihilation study of YBa 2 (Cu 1- x Sn x ) 3 O y superconductors
| Autor: | Chen Ang, Li Biao-Rong, Li Xiao-hua, Tang Chao-qun, Zhi Yu, Zhang Xu-li, Wang Shao-Jie |
|---|---|
| Rok vydání: | 1992 |
| Předmět: |
Superconductivity
Materials science Quantitative Biology::Neurons and Cognition Condensed matter physics Doping General Physics and Astronomy Spectral line Oxygen atom Condensed Matter::Superconductivity visual_art visual_art.visual_art_medium Ceramic Layer (electronics) Electronic density Positron annihilation |
| Zdroj: | Acta Physica Sinica (Overseas Edition). 1:219-223 |
| ISSN: | 1004-423X |
| DOI: | 10.1088/1004-423x/1/3/008 |
| Popis: | The positron annihilation lifetime spectra and their temperature dependence for the YBa2Cu3Oy superconducting ceramics doped with Sn have been studied. The results of analyses indicate that the element Sn is substituted for Cu(1) sites, and this leads to the ordering of the oxygen atoms as well as the increase of local electronic density in the Cu(1)-O layer where Cu(1) is substituted by Sn. |
| Databáze: | OpenAIRE |
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