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在cif的文件中可以找到wyckoff positions;在material project上也可以找到
wyckoff positions:
space group:
Bilbao Crystallographic Serve 可以到找到空间群的wyckoff positions。
primitive cell:最小重复单元
conventional cell:有所有的对称性
(图片来自The 7 Crystal Systems (with Examples and Images) – Materials Science & Engineering (msestudent.com))
以Y2O3 晶体为例:
space group :IA-3 206
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