| The effect of the Ca/Ba ratio on the superconductivity of the La3CaχBa4−χCu7Oy system | |
|---|---|
| 學年 | 81 |
| 學期 | 2 |
| 出版（發表）日期 | 1993-07-01 |
| 作品名稱 | The effect of the Ca/Ba ratio on the superconductivity of the La3CaχBa4−χCu7Oy system |
| 作品名稱（其他語言） | |
| 著者 | Wu, D. S.; Yang, Y. F.; Kao, H. -C. I.; 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 212(1-2), pp.32-36 |
| 摘要 | A series of samples with nominal composition of La3CaχBa4−χCu7Oy (0≤χ≤4.00) was prepared by the conventional powder reaction method. Single-phase materials with triple-perovskite structure were obtained for χ≤1.25 samples of which the lattice parameters monotonically decreased with the increase of Ca substitution. Superconductivity was observed for χ≤3.50 samples with 37 K≤Tconset≤86 K. A Tc plateau above 80 K was found in the 1.00≤χ≤1.25 samples with a-axis length of 3.879≥a≥3.872 Å. In other words, an optimal rCu-O distance of ca. 1.94 Å in the Cu-O planes was the most appropriate value for superconductivity in the La3CaχBa4−χCu7Oy system. |
| 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/987654321/25354 ) |
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