| Rietveld analysis and superconductivity of La1.5CaxBa1.5−xCu3Oy compounds | |
|---|---|
| 學年 | 86 |
| 學期 | 1 |
| 出版（發表）日期 | 1997-08-01 |
| 作品名稱 | Rietveld analysis and superconductivity of La1.5CaxBa1.5−xCu3Oy compounds |
| 作品名稱（其他語言） | |
| 著者 | Kao, H.-C. I.; Huang, W. N.; Lee, K. F.; Wang, C. M. |
| 單位 | 淡江大學化學學系 |
| 出版者 | Amsterdam: Elsevier BV * North-Holland |
| 著錄名稱、卷期、頁數 | Physica C: Superconductivity and its Applications 282-287(2), pp.1069-1070 |
| 摘要 | A series of single phase La1.5CaxBa1.5−xCu3Oy (0 ≤x≤ 0.50) compounds with tetragonal triple-perovskite structure is studied by Rietveld analysis. For x≤ 0.40, all the Ca2+ ions enter the center site, the Y3+ site of the tetragonal YBa2Cu3Oy phase. For x= 0.50, occupation factor of Ca2+ ion in the Y3+ site (OFCa/Y) is 0.466(2). The maximum allowed OFCa/Y is close to 0.50 which limits further substitution of Ca2+ ion to the Ba2+ ion for the La1.5CaxBa1.5−xCu3Oy series. Tc can be explained by the difference between OFCa/Y and OFLa/Ba, (OF of La3+ ion in the Ba2+ site). In other words, superconductivity is determined by the amount of Ca2+ ions in the Y3+ site and La3+ ions in the Ba2+ site in the unit-cell. |
| 關鍵字 | |
| 語言 | en |
| ISSN | 0921-4534 |
| 期刊性質 | 國外 |
| 收錄於 | SCI |
| 產學合作 | |
| 通訊作者 | |
| 審稿制度 | |
| 國別 | NLD |
| 公開徵稿 | |
| 出版型式 | 紙本 |
| 相關連結 |
機構典藏連結 ( http://tkuir.lib.tku.edu.tw:8080/dspace/handle/987654321/25186 ) |
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