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matxiong

木虫 (正式写手)

[交流] [求助]反铁磁计算问题请教!

我做一个铁磁计算

INCAR:
FM设置
ISPIN=2
MAGMOM=16*1 30*1 1*1 1*1

AFM设置
ISPIN=2
MAGMOM=16*1 30*1 1*1 1*-1

其中磁性原子被标记了正负号,其他原子没有标记正负号

可是AFM设置算出来的磁矩和FM设置相同

请问哪里有错误?

我的可能没有磁性超晶胞设置,因为两个铁磁原子位置没有对称性相连。有人做过类似计算没有?

[ Last edited by wuli8 on 2009-6-21 at 22:30 ]
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mermaid1128

木虫 (著名写手)

还要改变POTCAR文件

还要改变POTCAR文件
7楼2008-09-23 11:36:34
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mermaid1128

木虫 (著名写手)

把POSCAR贴出来看看

把POSCAR贴出来看看
2楼2008-09-23 10:29:31
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matxiong

木虫 (正式写手)

10.7762194459285900    0.0000000000000000    0.0000000000000000
     0.0000000000000000   10.7762194459285900    0.0000000000000000
     0.0000000000000000    0.0000000000000000   10.7880087759617600
  32  30   2
Direct
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  0.0179443923892418  0.0179443923892418  0.5144943146806579
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  0.2490577310694703  0.7535043190413377  0.4987684032741092
  0.7535039336983957  0.2490562763962068 -0.0012297861080878
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  0.7520828594810895  0.7520828594810895  0.0004894105905524
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  0.1250000000000000  0.6250000000000000  0.1250000000000000
  0.1250000000000000  0.6250000000000000  0.6250000000000000
  0.6250000000000000  0.1250000000000000  0.1250000000000000
  0.6250000000000000  0.1250000000000000  0.6250000000000000
  0.6250000000000000  0.6250000000000000  0.1250000000000000
  0.6250000000000000  0.6250000000000000  0.6250000000000000
  0.3705845954778504  0.3705845954778504  0.1233039916326623
  0.3705857583589943  0.3705857583589943  0.6233024059111214
3楼2008-09-23 10:56:49
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matxiong

木虫 (正式写手)

呵呵,搞错了,上面的POSCAR和INCAR不对应,但都是后面2个原子考虑磁性相反
4楼2008-09-23 11:00:38
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