磁黄铁矿
单斜晶系
结晶学
空位缺陷
材料科学
电子衍射
衍射
同步加速器
晶体结构
化学
物理
黄铁矿
冶金
光学
出处
期刊:Acta crystallographica
[International Union of Crystallography]
日期:2010-05-15
卷期号:66 (3): 271-279
被引量:42
标识
DOI:10.1107/s0108768110011845
摘要
The distribution of vacancies throughout the underlying NiAs structure of pyrrhotite 5 C was analysed through the application of vacancy avoidance and the closeness condition in conjunction with order–disorder layering. Two crystallographically equivalent structure solutions (chiral enantiomers) were produced consisting of layers containing one vacancy in every eight iron sites broken by a fully occupied layer every fifth iron layer, and best described by monoclinic statistical models. The statistical 5 C structures were verified using synchrotron powder diffraction data as well as published electron-diffraction patterns. An order–disorder structure description is proposed for the intermediate pyrrhotites of which pyrrhotite 5 C is an end-member.
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