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liuqun

木虫 (小有名气)

[求助] POSCAR

我寻找过渡态的时候,poscar里是部分优化,只放开了一个方向的自由度,例如:

  0.1666695191746660  0.3333304808253340  0.1076783500422350 F F T

,但是计算完成后的CONCAR文件里,上边的几层原子都跑了,都不在原来的位置了,只是为什么呢?明明是只让它在C轴动的,不懂
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liuqun

木虫 (小有名气)

引用回帖:
3楼: Originally posted by cenwanglai at 2012-05-31 22:42:57
请贴出你的POSCAR和INCAR.

POSCAR
(Pt8 I)2  (P1) ~ E:/l q/medea/medea/BRI-
1
   4.3018459245660496  -3.4313492046901199   0.0000000000000006
   0.0000000000000000   4.6204698379516600  -2.2422285714285701
   7.1909451644825104   7.1909451644825104  16.5322545756676007
16  2  
Selective dynamics
Direct
  0.0000000000000000  0.0000000000000000  0.0000000000000000 F F F
  0.0000000000000000  0.0000000000000000  0.3213757561882230 F F T
  0.3333319070793350  0.1666680929206650  0.2146349644133210 F F T
  0.1666680929206650  0.3333319070793350  0.1078282841032430 F F T
  0.5000000000000000  0.0000000000000000  0.0000000000000000 F F F
  0.5000000000000000  0.0000000000000000  0.3235743474707250 F F T
  0.8333318943069110  0.1666680929206650  0.2141518023387300 F F T
  0.6666680801482410  0.3333319070793350  0.1079857336496790 F F T
  0.0000000000000000  0.5000000000000000  0.0000000000000000 F F F
  0.0000000000000000  0.5000000000000000  0.3213705178394570 F F T
  0.3333319070793350  0.6666680801482410  0.2146235351891340 F F T
  0.1666680929206650  0.8333318943069110  0.1079231321646230 F F T
  0.5000000000000000  0.5000000000000000  0.0000000000000000 F F F
  0.5000000000000000  0.5000000000000000  0.3237491251008360 F F T
  0.8333318943069110  0.6666680801482410  0.2146785497909950 F F T
  0.6666680801482410  0.8333318943069110  0.1079854754240590 F F T
  0.5587222005322320  0.0590945121264649  0.5458023129401650 T T T
  0.4672839513296010  0.5134578609346609  0.5298595151358700 T T T
INCAR

SYSTEM =TS
PREC   =Accurate
GGA = PE
ENCUT  =400
ISTART =0;ICHARG =2
ISPIN =1; ISMEAR = 1
SIGMA = 0.01
NSW    =200
IBRION =3
POTIM=0
ISIF = 2
EDIFF = 1.0e-05
EDIFFG = -0.02
IOPT = 2
MAXMOVE = 0.2
FDSTEP = 5E-3
ICHGIN = 0
IMAGES = 6
SPING = -5
LCLIMB = .TRUE.
4楼2012-06-01 09:24:15
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huangguiyang

新虫 (小有名气)

★
xueht987: 金币+1, 谢谢回帖,鼓励交流! 2012-06-01 09:47:33
显然呀

你移动了一个原子,并固定了它的一个方向,而其他原子都可以自由动,
vasp优化结构,自然会让其他原子整体走,让结构回到原来的基态的了。

你起码固定两个原子,结构才不会弛豫回去。

但最好还是用cineb的方法来算。
2楼2012-05-31 22:37:08
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cenwanglai

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老和山猥琐派九段

优秀版主

请贴出你的POSCAR和INCAR.
3楼2012-05-31 22:42:57
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liuqun

木虫 (小有名气)

引用回帖:
3楼: Originally posted by cenwanglai at 2012-05-31 22:42:57
请贴出你的POSCAR和INCAR.

中间的构型都是用 nebmake.pl 自己生成的,IS 和FS也是经过优化的,不知道中间的构型出来的CONCAR怎么那么奇怪,原子都跑了
5楼2012-06-01 09:25:38
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