...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Crystallography reports >Crystal structure and superconductivity of Bi-2223
【24h】

Crystal structure and superconductivity of Bi-2223

机译：Bi-2223的晶体结构和超导性

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The crystal structure of the Bi2Sr2Ca2Cu3O10 + x high-temperature superconductor is investigated by the X-ray Rietveld method. The results obtained are used to analyze the structural features of the bismuth high-temperature superconductors in respect to their superconducting properties. The refinement of the structure of the Bi-2223 compound in the four-dimensional space group A2aa (a00) 000 (Z = 4) with the vector q similar to 0.21a* does not reveal any indication of a modulated structure of the Bi-2212 type. The lattice parameters are 5.411(3), 5.409(1), and 37.082(1) . The agreement factors are R (wp) = 8.10% and R (p) = 5.49%. The results obtained are consistent with the notion that bismuth high-temperature superconductors are supercon-ductors with a more distorted crystal structure as compared to other representatives of high-temperature superconductors with critical temperatures T (c) > 100 K. These distortions primarily manifest themselves in the segregation of the Bi and O ions of the "charge block" with the formation of zigzag chains that are characteristic of the structure of Bi2O3 and are stimulated in particular by defects in the calcium layer.
机译：通过X射线Rietveld方法研究了Bi2Sr2Ca2Cu3O10 + x高温超导体的晶体结构。获得的结果用于分析铋高温超导体相对于其超导性能的结构特征。二维空间群A2aa（a00）000（Z = 4）中Bi-2223化合物的结构与矢量q相似于0.21a *的细化没有表明Bi- 2212型。晶格参数为5.411（3），5.409（1）和37.082（1）。一致性因子为R（wp）= 8.10％和R（p）= 5.49％。所获得的结果与以下观点相一致：与临界温度T（c）> 100 K的高温超导体的其他代表相比，铋高温超导体是具有更扭曲的晶体结构的超导体。这些畸变主要表现为自身在“电荷嵌段”的Bi和O离子的分离中，形成Z 2字形链，该Z形字形是Bi 2 O 3结构的特征，尤其是受钙层缺陷的刺激。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号