查詢結果分析
相關文獻
- 鈣摻雜對稀土鋇銅氧高溫超導體區域結構之影響
- 適用於普通化學實驗之材料化學實驗--釔鋇銅氧高溫超導體之製備
- 高溫超導體Bi-2201的研製
- 高溫超導體Bi2212系中Bi濃度對Tc影響之研究
- 某些超導體的超導電性與陰電性之相關性研究
- 高溫超導體理論之數值研究
- The Influence of Heat-treated Process on Superconductivity of the High Temperature Superconductor Bi2212
- The Study of the Discovering Process and Key Factor that is Found about High Tc Superconductors
- Effect of Pb Doping in High-Tc Bi[feaf]Sr[feaf]CaCu[feaf]Oy Superconductors Studied by X-ray Absorption Near-edge Structure Spectroscopy
- 適用於普通化學實驗之材料化學實驗--利用檸檬酸鹽凝膠法製備釔鋇銅氧高溫超導體
頁籤選單縮合
題名 | 鈣摻雜對稀土鋇銅氧高溫超導體區域結構之影響=Effects of Ca Doping on the Local Structure of Rare Earth Barium Copper Oxide High Tc Superconductors |
---|---|
作者 | 張經霖; 蔡浩野; | 書刊名 | 淡江理工學刊 |
卷期 | 1:1 1998.07[民87.07] |
頁次 | 頁21-29 |
分類號 | 337.473 |
關鍵詞 | 延伸X光線吸引精細結構; 高溫超導; R[fec5]Ca戓Ba[feaf]Cu[feb0]O肔; EXAFS; High temperature superconductors; |
語文 | 中文(Chinese) |
中文摘要 | 對高溫超導體而言電洞濃度是很重要的參數,當Ca�ヮ�代R�q在足氧的RBa�浚u�� O □時, 電洞隨鈣摻雜而增加但超導臨界溫度 T �搹]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 �ヮ�代 R �q足氧的 R �� Ca �X Ba �� Cu �� O □( 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。 |
英文摘要 | 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 this brings the system into the overdoping regime and causes 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 the effect of Ca doping on the local structure. |
本系統之摘要資訊系依該期刊論文摘要之資訊為主。