| 添加Cu2S对Bi-Pb-Sr-Ca-Cu-O体系超导性的影响 |
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| 引用本文： | 陈学安,陈德俊,徐翠英,张金彪,朱道本,杨德亮. 添加Cu2S对Bi-Pb-Sr-Ca-Cu-O体系超导性的影响[J]. 物理化学学报, 1994, 10(8): 704-709. DOI: 10.3866/PKU.WHXB19940807 |
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| 作者姓名： | 陈学安 陈德俊 徐翠英 张金彪 朱道本 杨德亮 |
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| 作者单位： | Institute of Chemistry, Academia Sinica, Beijing 100080 |
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| 摘 要： | 本文对Cu_2S添加的Bi-Pb-Sr-Ca-Cu-O体系进行了低温电阻、X射线衍射和XPS研究．实验结果表明，加入少量的Cu_2S能够降低高T_c相的形成温度，改善超导性能，加入Cu_2S引起了Cu 2p_(3/2)谱的主峰向低结合能方向移动，并减少其卫星峰的面积．这表明Cu_2S的加入减少了Cu~(2+)的量，即导致空穴载流子浓度的减小．
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| 关 键 词： | 超导性 Cu2S添加的Bi-Pb-Sr-Ca-Cu-O体系 R-T XRD XPS |
| 收稿时间： | 1993-02-13 |
| 修稿时间： | 1993-08-14 |
The Effect of Cu2S Addition on the Superconductivity of Bi-Pb-Sr-Ca-Cu-O System |
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| Chen Xuean, Chen Dejun, Xu Cuiying, Zhang Jinbiao, Zhu Daoben,Yang Deliang. The Effect of Cu2S Addition on the Superconductivity of Bi-Pb-Sr-Ca-Cu-O System[J]. Acta Physico-Chimica Sinica, 1994, 10(8): 704-709. DOI: 10.3866/PKU.WHXB19940807 |
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| Authors: | Chen Xuean Chen Dejun Xu Cuiying Zhang Jinbiao Zhu Daoben Yang Deliang |
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| Affiliation: | Institute of Chemistry, Academia Sinica, Beijing 100080 |
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| Abstract: | Superconductivity of Cu2S doped Bi-Pb-Sr-CaCu-O system has been investigated by resistance, X-ray diffraction and XPS measurements. It was found that an appropriate amount of Cu2S can lower the optimum sintering temperature and enhance the formation of the high-Tc phase. The analyses of XPS spectra reveal that the addition of Cu2S causes the negative chemical shifts of the Cu 2p3/2 main peaks and the diminution of their satellite areast suggesting that the hole contents decrease with increasing Cu2S concentration. |
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| Keywords: | Superconductivity Cu2S doped Bi-Pb-Sr-Ca-Cu-O system R-T XRD XPS |
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