六方 MnAl(4)的晶体结构。

Crystal structure of hexagonal MnAl(4).

机构信息

Linus Pauling Institute of Science and Medicine, 440 Page Mill Road, Palo Alto, CA 94306.

出版信息

Proc Natl Acad Sci U S A. 1987 Jun;84(11):3537-9. doi: 10.1073/pnas.84.11.3537.

DOI:10.1073/pnas.84.11.3537

PMID:16593837

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC304909/

Abstract

A structure is proposed for the hexagonal form of MnAl(4), with a(H) = 28.4 A and c(H) = 12.43 A, on the basis of a high-resolution electron micrograph and comparison with crystals of known structures. The proposed structure involves seven 104-atom complexes of 20 Friauf polyhedra, sharing some atoms with one another. It is closely related to the 23.36-A cubic structure of MnAl(4) and to the 14.19-A cubic structure of Mg(32)(Al,Zn)(49).

摘要

提出了 MnAl(4) 六方形式的结构，基于高分辨率电子显微镜照片和与已知结构晶体的比较，其 a(H) = 28.4 A，c(H) = 12.43 A。所提出的结构涉及七个由 20 个 Friauf 多面体组成的 104 原子复合物，它们彼此共享一些原子。它与 MnAl(4) 的 23.36-A 立方结构和 Mg(32)(Al,Zn)(49)的 14.19-A 立方结构密切相关。