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Role of Pb in High-Tc Bi-based Superconductors
並列摘要
An investigation of the variation of hole concentration within the CuO2 planes using X-ray absorption near-edge structure (XANES) spectroscopy with synchrotron radiation in the (Bi2−xPbx)Sr2CaCu2Oy [(Bi,Pb)-2212]series of high-Tc superconductors synthesized by solid state reaction in air is presented. Pb is found to have the valence of 2+ in the samples of this series. Moreover, the hole concentration increases with increasing Pb content. The results lead us to conclude that the substitution of Pb2+ in the Bi3+ sites of the (Bi,Pb)-2212 system causes the compounds to be in the over-doped state. This effect results in the compounds having a high critical current density.
並列關鍵字
無資料被引用紀錄
唐珒淳（2008）。飲用水中含鹵乙酸分析方法評估〔碩士論文，國立臺灣大學〕。華藝線上圖書館。https://doi.org/10.6342/NTU.2008.00239
李旻軒（2015）。企業社會責任與避險決策〔碩士論文，國立中正大學〕。華藝線上圖書館。https://www.airitilibrary.com/Article/Detail?DocID=U0033-2110201614014173
延伸閱讀
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