Influence of Nd at Ba-sites on superconductivity of YBa2-xNdxCu3Oy
文献类型：期刊论文
| 作者 | Tang, WH ; Gao, J |
| 刊名 | PHYSICA C
 |
| 出版日期 | 1998 |
| 卷号 | 298期号:1-2页码:66 |
| 关键词 | NORMAL-STATE PROPERTIES PAIR-BREAKING PHASE-EQUILIBRIA SYSTEMS GD PR EU SUPPRESSION PRBA2CU3O7 FIELD |
| ISSN号 | 0921-4534 |
| 通讯作者 | Tang, WH: Univ Hong Kong, Dept Phys, Pokfulam Rd, Hong Kong, Peoples R China. |
| 中文摘要 | The samples of YBa2-xNdxCuxOy (x = 0.0-0.5 with a step of 0.05) were prepared by solid state reactions, The solubility of Nd at the Ba-sites was determined by X-ray powder diffraction being x = 0.3 in YBa2-xNdxCu3Oy, smaller than that in Nd1+xBa2-xCu3Oy. No structural transition from orthorhombic to tetragonal was observed. The variation of the zero resistance transition temperatures T-c(zero) vs. the Nd content x exhibits two steps, For x less than or equal to 0.25 T-c(zero) are all above 92 K, and T-c(zero) = 94 K for x = 0.25. For x greater than or equal to 0.3 T-c(zero) drops sharply to about 84 K, and finally for x=0.5 T-c(on) falls to 30 K and T-c(zero) is below 10 K. The two-step variation of T-c might be an indication of the existence of two trap levels for holes. The oxygen content and charge transfer due to the unbalance between Nd3+ and Ba2+ may be key factors to the superconductivity of YBa2-xNdxCu3Oy. The magnetic pair breaking of magnetic rare earth ions at the Ba-sites seems not a major factor to the T-c-depression of ReBa2Cu3Oy superconductors. (C) 1998 Elsevier Science B.V. |
| 收录类别 | SCI |
| 语种 | 英语 |
| 公开日期 | 2013-09-17 |
| 源URL | [http://ir.iphy.ac.cn/handle/311004/39861]  |
| 专题 | 物理研究所_物理所公开发表论文_物理所公开发表论文_期刊论文 |
| 推荐引用方式 GB/T 7714 | Tang, WH,Gao, J. Influence of Nd at Ba-sites on superconductivity of YBa2-xNdxCu3Oy[J]. PHYSICA C,1998,298(1-2):66. |
| APA | Tang, WH,&Gao, J.(1998).Influence of Nd at Ba-sites on superconductivity of YBa2-xNdxCu3Oy.PHYSICA C,298(1-2),66. |
| MLA | Tang, WH,et al."Influence of Nd at Ba-sites on superconductivity of YBa2-xNdxCu3Oy".PHYSICA C 298.1-2(1998):66. |
入库方式： OAI收割
来源：物理研究所
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