教師資料查詢 | 類別: 期刊論文 | 教師: 錢凡之 CHIEN, FAN-Z (瀏覽個人網頁)

標題:Ion substitution effects on the structure stability of cuprate superconductors
學年89
學期1
出版(發表)日期2000/11/01
作品名稱Ion substitution effects on the structure stability of cuprate superconductors
作品名稱(其他語言)
著者錢凡之; Chien, F. Z.
單位淡江大學物理學系
出版者淡江大學
著錄名稱、卷期、頁數Tamkang journal of science and engineering 3(3), pp.139-144
摘要We have demonstrated that using a transition metal ion to partially substitute Cu ion of the YSr2Cu3Oy can stabilize its crystal structure and retain superconductivity. The superconducting transition temperature in YSr2(Cu1-xMx)3Oy, where M is transition metal ion, ranges from 40K to 80K depending on the specific M ion. Lattice contraction due to Sr substitution makes the Ba/Sr ion to move closer to CuO plane, and consequently leads to a charge transfer between oxygen. Our study shows that the key factor controlling the structural stability in Y-Sr-Cu-O system is the effective ionic radius Sr in lattice. The introduction of transition metal doping is to increase the effective ionic radius of Sr through the increase of oxygen content.
關鍵字superconductivity;lattice parameters;perovskite;tolerance factor
語言英文(美國)
ISSN1560-6686
期刊性質國內
收錄於
產學合作
通訊作者
審稿制度
國別中華民國
公開徵稿
出版型式,紙本
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