期刊
ACTA CRYSTALLOGRAPHICA SECTION B-STRUCTURAL SCIENCE
卷 66, 期 -, 页码 271-279出版社
WILEY-BLACKWELL
DOI: 10.1107/S0108768110011845
关键词
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资金
- CSIRO
The distribution of vacancies throughout the underlying NiAs structure of pyrrhotite 5C 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 5C 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 5C is an end-member.
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