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点点滴滴2

铜虫 (小有名气)

[求助] 求助MS中用castep优化云母(001)面结构失败的原因

*Warning* max. SCF cycles performed but system has not reached the groundstate.
  
Current total energy =  -13136.25934970     eV
(energy not corrected for finite basis set)

  ****************************************************************************
  Warning: electronic minimisation did not converge when finding ground state.
  ****************************************************************************
  Writing checkpoint file...

Writing model to muscovite__0_0_1_.check
Error check_elec_ground_state : electronic_minimisation of initial cell failed.
Current trace stack:
check_elec_ground_state
castep
Error check_elec_ground_state : electronic_minimisation of initial cell failed.
Current trace stack:
check_elec_ground_state
castep
Error check_elec_ground_state : electronic_minimisation of initial cell failed.
Current trace stack:
check_elec_ground_state
castep
Error check_elec_ground_state : electronic_minimisation of initial cell failed.
Current trace stack:
check_elec_ground_state
castep
Error check_elec_ground_state : electronic_minimisation of initial cell failed.
Current trace stack:
check_elec_ground_state
castep
Error check_elec_ground_state : electronic_minimisation of initial cell failed.
Current trace stack:
check_elec_ground_state
castep
Error check_elec_ground_state : electronic_minimisation of initial cell failed.

[ Last edited by 点点滴滴2 on 2011-11-11 at 10:45 ]
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6楼2011-11-14 14:40:07
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zyj8119

木虫 (著名写手)

【答案】应助回帖

★
ghcacj(金币+1): 谢谢 2011-11-12 09:23:25
引用回帖:
1楼: Originally posted by 点点滴滴2 at 2011-11-11 10:38:13:
*Warning* max. SCF cycles performed but system has not reached the groundstate.
  
Current total energy =  -13136.25934970     eV
(energy not corrected for finite basis set)

  ************** ...

是不是收敛标准定的太高了?导致最终状态不能收敛。
好好学习,天天向上。
2楼2011-11-11 12:49:03
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点点滴滴2

铜虫 (小有名气)

请问什么是收敛标准定的太高,我是菜鸟。
3楼2011-11-11 22:43:58
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caijj09

木虫 (职业作家)

【答案】应助回帖

★ ★ ★ ★ ★
御剑江湖(金币+5): 谢谢 2011-11-13 20:12:36
出错分析
SCF cycles performed but system has not reached the groundstate.
  
Current total energy =  -13136.25934970     eV
(energy not corrected for finite basis set)

第一句:SCF循环可以进行,但是不能达到基态——出错的结果

第三句:由于basis set设置不对,因此energy 不正确

纠正方式:

修改basis set 设置的取值。 在CASTEP calculation 里面找到Electronic  点击窗口右下角的more. 弹出的窗口里面第一个就是basis set .修改数值就可以了
自强不息
4楼2011-11-12 21:08:08
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