Influence of fluorine on the properties of Nd1.85Ce0.15CuO4-delta n-type superconductor
文献类型：期刊论文
| 作者 | C. Wang ; J. K. Liang ; X. L. Chen ; J. R. Min ; G. H. Rao ; C. Dong ; G. C. Che ; S. L. Jia |
| 刊名 | Physica C-Superconductivity and Its Applications
 |
| 出版日期 | 1996 |
| 卷号 | 260期号:1-2页码:64-70 |
| 关键词 | doped nd2cuo4 crystals growth |
| ISSN号 | 0921-4534 |
| 中文摘要 | The fluorine-doped n-type superconductors Nd1.85Ce0.15CuO4-x-yFy (nominal composition) are synthesized with CuF2 as one of the reactants. Especially, it is found that the superconductivity of Nd1.85Ce0.15CuO4-delta is improved with T-c(on) = 27 K, T-c(0) = 15.5 K when CuF2 is taken as a source of atmosphere; the temperature dependence of the resistance exhibits a metallic conducting behavior above T-c. Magnetization measurements showed 30% of superconducting phase fractions by means of SQUID magnetometry, which was a better result of superconductivity in (Nd,Ce)-Cu-O bulk samples than when prepared under ambient pressure. Compared with the cast of F undoping, F doping not only induces a transition from semiconductivity to metallic conductivity and decreases the normal-state resistivity, but also increases the T-c(on) and T-c(0), and decreases the transition width Delta T-c. In particular, the superconductivity of the samples is sensitive to the form of the dopant source and sintering procedures, Especially, the Nd1.85Ce0.15CuO3.6F0.4 sintered only in air also exhibits superconductivity with T-c(on) = 19.5 K, but does not reach zero resistance, which has not been reported before. X-ray diffraction experiments indicate that fluorine atoms do enter the superconducting phase lattice. |
| 原文出处 | |
| 公开日期 | 2012-04-14 |
| 源URL | [http://ir.imr.ac.cn/handle/321006/38419]  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 推荐引用方式 GB/T 7714 | C. Wang,J. K. Liang,X. L. Chen,et al. Influence of fluorine on the properties of Nd1.85Ce0.15CuO4-delta n-type superconductor[J]. Physica C-Superconductivity and Its Applications,1996,260(1-2):64-70. |
| APA | C. Wang.,J. K. Liang.,X. L. Chen.,J. R. Min.,G. H. Rao.,...&S. L. Jia.(1996).Influence of fluorine on the properties of Nd1.85Ce0.15CuO4-delta n-type superconductor.Physica C-Superconductivity and Its Applications,260(1-2),64-70. |
| MLA | C. Wang,et al."Influence of fluorine on the properties of Nd1.85Ce0.15CuO4-delta n-type superconductor".Physica C-Superconductivity and Its Applications 260.1-2(1996):64-70. |
入库方式： OAI收割
来源：金属研究所
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