| 三价铜对导电性能的影响及其表征 |
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| 引用本文： | 曹学强,王鸿燕,苏锵.三价铜对导电性能的影响及其表征[J].湖南师范大学自然科学学报,2001,24(3):54-58. |
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| 作者姓名： | 曹学强 王鸿燕 苏锵 |
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| 作者单位： | 1. 湖南师范大学化学系,
2. 中国科学院长春应用化学研究所, |
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| 基金项目： | 湖南省自然科学基金资助项目 ( 5 3 13 3 - 4 65 ) |
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| 摘 要： | 研究了两种不同类型晶体结构的稀土铜酸盐中三价铜对导电性能的影响及三价铜的表征，Ca^2 取代Y^3 或Sr^2 取代La^3 ，使Y2Cu2O5和La2CuO4中铜的价态升高、样品电阻率降低，利用化学滴定法、X-射线光电子能谱（XPS）和磁化率测量对Y2-xCaxCu2O5和La2-xSrxCuO4中三价铜的存在及其自旋状态进行了表征。
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| 关 键 词： | 三价铜 导电性 表征 稀土铜酸盐 晶体结构 超导体 |
| 文章编号： | 1000-2537(2001)03-0054-05 |
| 修稿时间： | 2001年9月20日 |
Influence of Trivalent Copper on Electrical Conductivity and Its Characterization |
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| CAO Xue qiang ,WANG Hong yan ,SU Qiang.Influence of Trivalent Copper on Electrical Conductivity and Its Characterization[J].Journal of Natural Science of Hunan Normal University,2001,24(3):54-58. |
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| Authors: | CAO Xue qiang WANG Hong yan SU Qiang |
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| Institution: | CAO Xue qiang 1,WANG Hong yan 2,SU Qiang 2 |
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| Abstract: | The characterization of trivalent copper and its influence on the electrical conductivities of two types of rare earth cuprates with different crystal structures were studied in this work.The substitution of Ca 2+ for Y 3+ or Sr 2+ for La 3+ increases the valence of copper in Y 2Cu 2O 5 or in La 2CuO 4 and also increases their electrical conductivities.Chemical titration,XPS and magnetization were applied for the characterization of the existence and spin state of trivalent copper. |
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| Keywords: | trivalent copper electrical conductivity characterization |
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