| Bi2201体系中Raman散射、微结构和输运性质研究 |
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| 引用本文： | 许高杰,毛志强,张建武,许存义,左建,闫宏杰,张裕恒. Bi2201体系中Raman散射、微结构和输运性质研究[J]. 低温物理学报, 2000, 15(1): 56-60 |
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| 作者姓名： | 许高杰 毛志强 张建武 许存义 左建 闫宏杰 张裕恒 |
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| 作者单位： | 1. 中国科技大学结构中心,合肥,230026;中国科技大学天文与应用物理系,合肥,230026
2. 中国科技大学结构中心,合肥,230026 |
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| 基金项目： | 中国科学院资助项目,the National Center for Research and Development on Superconductivity,中国博士后科学基金,59625205,,,,, |
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| 摘 要： | 利用Ｘ－光衍射,电子衍射,Ｒａｍａｎ散射和电阻率等手段对多晶样品Ｂｉ１．８Ｐｂ０．２Ｓｒ２Ｃｕ１－ｘＦｅｘＯｙ,Ｂｉ１．８Ｐｂ０．２Ｓｒ１．６＋ｘＬａ０．４－ｘＣｕ１－ｘＦｅｘＯｙ的结构和性能进行了研究。结果表明：Ｂｉ２２０１体系的调制特征与客外氧的多少无关,６２５ｃｍ＾－１附近的Ｒａｍａｎ峰受‘电荷转移’效应和调制结构变化的显著影响,晶体的微结构变化强烈影响体系的超电性和输运性质。
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| 关 键 词： | 超导体 微结构 输运性质 Bi2201体系 Raman散射 |
RAMAN SCATTERING, MICROSTRUCTURE AND TRANSPORT PROPERTY OF Fe DOPED Bi2201 SYSTEM |
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| Xu Gao-jie,Mao Zhi-qiang,Zhang Jian-wu,Xu Cun-yi,Zuo Jian,Yan Hong-jie,Zhang Yu-heng. RAMAN SCATTERING, MICROSTRUCTURE AND TRANSPORT PROPERTY OF Fe DOPED Bi2201 SYSTEM[J]. Chinese Journal of Low Temperature Physics, 2000, 15(1): 56-60 |
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| Authors: | Xu Gao-jie Mao Zhi-qiang Zhang Jian-wu Xu Cun-yi Zuo Jian Yan Hong-jie Zhang Yu-heng |
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| Abstract: | Polycrystalline samples of Bi1.8Pb0.2Sr2Cu1-xFexOy, Bi1.8Pb0.2Sr1.6+xLa0.4-xCu1-xFexOy have been studied by means of X-ray diffraction, ED patterns, Raman scattering and resistivity. Experimental results show that the characteristic of modulation structure of Bi2201 system does not depend on the amount of the extra oxygen. The phonon frequencies of OSr mode around 625 cm-1 can be influenced by "charge transfer" effect and the variation of modulation structure. Crystal microstructural characteristic play an important role in influencing superconducting transition temperature and transport properties. |
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