教師資料查詢 | 類別: 期刊論文 | 教師: 張經霖 CHANG, HENRY CHING-LIN (瀏覽個人網頁)

標題:鈣摻雜對稀土鋇銅氧高溫超導體區域結構之影響
學年86
學期2
出版(發表)日期1998/07/01
作品名稱鈣摻雜對稀土鋇銅氧高溫超導體區域結構之影響
作品名稱(其他語言)Effects of Ca doping on the local structure of rare Earth barium copper oxide high Tc superconductors
著者張經霖; Chang, C. L.; 蔡浩野; Tsay, H. Y.
單位淡江大學物理學系
出版者淡江大學
著錄名稱、卷期、頁數淡江理工學刊=Tamkang Journal of Science and Engineering 1(1)頁 21-29
摘要對高溫超導體而言電洞濃度是很重要的參數,當Ca+2取代R+3在足氧的RBa2Cu3O7-δ時,電洞隨鈣摻雜而增加但超導臨界溫度Tc因為過度摻雜效應而下降,於是Ca 摻入後對區域環境之影響及其引進之電洞所處之位置就成了瞭解此超導系統電導性質之關鍵,我們在室溫下進行了延伸光吸收光譜精細結構對Ca+2取代R+3足氧的R1-xCaxBa2Cu3O7-δ(R=Gd, Ho)超導體之量測,對R 與Ca 之區域環境及相關問題予以解析。;It is well known that the hole concentration is a crucial parameter for superconductivity of the high temperature superconductors. When Ca+2 replaces part of R+3 in fully oxygenated RBa2Cu3O7-δ. The hole concentration increases with Ca+2 concentration bring the system into the overdoping regime and causing the superconducting transition temperature Tc to drop. The sites of the extra hole and that of the Ca are the key factors to the understanding of the electrical transport property of this Ca doped system. We have performed the EXAFS on R1-xCaxBa2Cu3O7-δ ( R=Gd, Ho ) at room temperature to study effect of Ca doping on the local structure.
關鍵字延伸X光線吸引精細結構;R(下標 1-x)Ca(下標 x)Ba2Cu3O(下標 7-δ);高溫超導;EXAFS;R(subscript 1-x)Ca(subscript x)Ba2Cu3O(subscript 7-δ);High Temperature Superconductors
語言中文
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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