Superconductivity, hole concentration and peritectic transition 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 Superconductivity, hole concentration and peritectic transition of La1.5CaxBa1.5−xCu3Oy compounds
作品名稱(其他語言)
著者 Huang, W. N.; Wang, C. M.; Kao, H.-C. I.
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.767-768
摘要 A series of single phase La1.5CaxBa1.5−xCu3Oy(0≤x≤0.50) compounds with tetragonal triple-perovskite structure is prepared. They have an incongruent melting point at 1107±1 °C which is not dependent on the amount of Ca substitution. Oxygen stoichiometry and hole concentration of these materials increase with increasing x. Thermal stability of the oxygen atom in the La1.5CaxBa1.5−xCu3Oy series is independent on the oxygen stoichiometry. For x≥ 0.25, Tc increases rapidly from 33 K to 73 K with increasing x. Tc of La1.5CaxBa1.5−xCu3Oy (CB) is always lower than that of La1.5−xCaxBa1.5Cu3Oy (LC) for a given x, suggesting that an increase in the mole fraction of the trivalent cation in these compounds would decrease its Tc.
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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
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