教師資料查詢 | 類別: 期刊論文 | 教師: 高惠春 KAO, HUEY-CHUEN (瀏覽個人網頁)

標題: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
語言英文
ISSN0921-4534
期刊性質國外
收錄於SCI
產學合作
通訊作者
審稿制度
國別荷蘭
公開徵稿
出版型式紙本
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