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horson

金虫 (小有名气)

[求助] 请大虾看看这个POSCAR文件的晶体为什么是单斜晶系

准备了下面的这个POSCAR文件,按说晶胞的三个角都是90度,应该属于正交晶系,为啥用软件识别对称性后都显示为单斜晶系呢?能否给出详细解释呢?

Ca C O
   1.0
     4.7312595978093483    0.0000000000000000    0.0000000000000000
     0.0000000000000000    3.3330662366068253    0.0000000000000000
     0.0000000000000000    0.0000000000000000   10.4707189934220519
   4   4  12
Direct
  0.0940562326154497  0.8145763701944939  0.3961187773810453
  0.9059437673845503  0.1854236298055061  0.6038812226189547
  0.9059437673845503  0.3145763701944939  0.1038812226189547
  0.0940562326154497  0.6854236298055061  0.8961187773810453
  0.4597188819831138  0.9427648932085786  0.1385651089273021
  0.5402811180168863  0.0572351067914214  0.8614348910726979
  0.5402811180168863  0.4427648932085786  0.3614348910726979
  0.4597188819831138  0.5572351067914214  0.6385651089273021
  0.2738407620094100  0.8057901217317583  0.1718291270836408
  0.7261592379905899  0.1942098782682417  0.8281708729163592
  0.7261592379905899  0.3057901217317583  0.3281708729163592
  0.2738407620094100  0.6942098782682417  0.6718291270836408
  0.7540798096818085  0.8139214775223739  0.1810379699469166
  0.2459201903181915  0.1860785224776261  0.8189620300530833
  0.2459201903181915  0.3139214775223739  0.3189620300530833
  0.7540798096818085  0.6860785224776261  0.6810379699469167
  0.3359760272300462  0.2106251760251165  0.0486776719400698
  0.6640239727699538  0.7893748239748835  0.9513223280599302
  0.6640239727699538  0.7106251760251165  0.4513223280599302
  0.3359760272300462  0.2893748239748835  0.5486776719400698
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WATERpml

木虫 (小有名气)

在MS中如果你impose symmetry,就会显示为单斜晶系了
8楼2017-08-19 10:39:24
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