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Structure and spin-gap in the normal state of Y1-xCaxBa1.9Nd0.1Cu3Oy cuprates
Wu, XS; Tan, WS; Xu, YM; Zhang, EM; Du, J; Hu, A; Jiang, SS; Gao, J
2003
发表期刊PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS
卷号398期号:3-4页码:#REF!
通讯作者Wu, XS (reprint author), Nanjing Univ, Dept Phys, Natl Lab Solid State Microstruct, Inst Solid State Phys, Nanjing 210093, Peoples R China.
文章类型Article
摘要Polycrystallized Y1-xCaxBa1.9Nd0.1Cu3Oy (YCBNCO) compounds with x less than or equal to 0.40 were synthesized using standard solid state reaction technique. The structure for all samples was characterized by X-ray diffraction with Rietveld refinements. The transport properties for YCBNCO were measured by the standard four-probe method in the temperature range from 20 to 300 K. With the increase of Ca content, the variation of the superconducting transition temperature T-c can be divided into three regions: in the doping region I with x less than or equal to 0.10, T-c decreases sharply and linearly with x, which may relate to the competition between Ca2+ and Nd3+; in the region II with 0.10 < x < 0.25, T-c deviates the fitting line; and in region III with x greater than or equal to 0.25, T-c decreases slowly with increasing Ca content,which may relate to the formation of the Ca-rich phase. The dependence of resistivity on temperature, and the relation of the structural parameters versus the content of Ca were discussed. The Ca content dependence of the spin-gap opening temperatures in the normal state for YCBNCO was investigated. (C) 2003 Elsevier B.V. All rights reserved.
关键词Y1-xCaxBa1.9Nd0.1Cu3Oy cuprates zero resistance temperature structural effects spin-gap opening temperature
学科领域Physics
DOI10.1016/S0921-4534(03)01275-9
收录类别SCI
WOS类目Physics, Applied
WOS记录号WOS:000186282800008
引用统计
被引频次:7[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/226387
专题多学科研究中心
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GB/T 7714
Wu, XS,Tan, WS,Xu, YM,et al. Structure and spin-gap in the normal state of Y1-xCaxBa1.9Nd0.1Cu3Oy cuprates[J]. PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS,2003,398(3-4):#REF!.
APA Wu, XS.,Tan, WS.,Xu, YM.,Zhang, EM.,Du, J.,...&Gao, J.(2003).Structure and spin-gap in the normal state of Y1-xCaxBa1.9Nd0.1Cu3Oy cuprates.PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS,398(3-4),#REF!.
MLA Wu, XS,et al."Structure and spin-gap in the normal state of Y1-xCaxBa1.9Nd0.1Cu3Oy cuprates".PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS 398.3-4(2003):#REF!.
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