...
【24h】

The crystal structure of Zr2NiD4.5

机译:Zr2nid4.5的晶体结构

获取原文
获取原文并翻译 | 示例
           

摘要

The crystal structure of Zr2NiD4.5 has been determined by a combination of synchrotron radiation powder X-ray diffraction, electron diffraction and powder neutron diffraction data. Deuterium ordering results in a triclinic supercell given by a(super) = 6.81560 (7), b(super) = 8.85137 (9), c(super) = 8.88007 (10) A, alpha(super) = 79.8337 (8), beta(super) = 90.0987 (9), gamma(super) = 90.3634 (9)degrees, which relates to the non-super unit cell as a(super) = -a, b(super) = -b-c, c(super) = -b+c. The centrosymmetric and fully ordered deuterium sublattice was determined by simulated annealing and Rietveld refinement. Deuterium was found to occupy three types of tetrahedral sites: two that are coordinated by four Zr atoms and one that is coordinated by three Zr atoms and one Ni atom. All D-D distances are longer than 2 A. The feasibility of the crystal structure was supported by density functional theory calculations.
机译:通过同步辐射粉末X射线衍射,电子衍射和粉末中子衍射数据的组合来确定Zr2Nid4.5的晶体结构。 氘命令导致由(超级)= 6.81560(7),B(超级)= 8.85137(9),C(超级)= 8.88007(10)A,Alpha(超级)= 79.8337(8), β(超级)= 90.0987(9),γ(超)= 90.3634(9)度,涉及非超级单元电池作为(超级)= -a,b(超级)= -bc,c(超级 )= -b + c。 通过模拟退火和RIETVELD改进来确定亚氨基微量和完全有序的氘分部。 发现氘是占据三种类型的四面体位点:两个由四个Zr原子和由三个Zr原子和一个Ni原子配位的一个。 所有D-D距离长于2 A.晶体结构的可行性由密度泛函理论计算支持。

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