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weiguangchao銅蟲(chóng) (小有名氣)
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[求助]
求教大神MS的問(wèn)題 已有1人參與
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小弟最近在用MS計(jì)算某些礦石的性質(zhì),先利用MS優(yōu)化了鈣鐵榴石的晶體結(jié)構(gòu),化學(xué)組成Ca3Fe2Si3O12 。但是在經(jīng)過(guò)一個(gè)多月的計(jì)算后,竟然出現(xiàn)以下結(jié)果,想想也是醉了。希望了解的大神能夠解惑,授業(yè)。感激不盡。 Writing model to w-gaitie.check + Mode 43: not Raman active; calculation not required + + Mode 44: not Raman active; calculation not required + + Mode 45: not Raman active; calculation not required + + Mode 46: performing Raman intensity calculation + *Warning* max. SCF cycles performed but system has not reached the groundstate. Current total energy = -38040.18620447 eV (energy not corrected for finite basis set) Secondd_get_u0: Warning: Band structure did not converge for 3 out of 4 kpoints Consider increasing BS_MAX_ITER or BS_EIGENVALUE_TOL. Secondd_CG_minimize: Can not converge to requested precision in 500 iterations Best convergence achievable is 71.8640 A**3 Consider increasing EFIELD_MAX_CYCLES or convergence tolerance EFIELD_ENERGY_TOL |

主管區(qū)長(zhǎng) (職業(yè)作家)
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專家經(jīng)驗(yàn): +1059 |
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*Warning* max. SCF cycles performed but system has not reached the groundstate. 回復(fù):從輸出文件來(lái)看,說(shuō)明已經(jīng)達(dá)到你設(shè)置的最大迭代次數(shù),不同系統(tǒng)能量并未收斂到你設(shè)置的精度要求。 可能的解決辦法,在CASTEP--Electronic--More--SCF--Max. SCF cycles,增大該數(shù)值,一般默認(rèn)為100。 或者減小對(duì)收斂容差的要求,即增加容差的數(shù)值,讓收斂更容易達(dá)到。 |

銅蟲(chóng) (小有名氣)

主管區(qū)長(zhǎng) (職業(yè)作家)
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專家經(jīng)驗(yàn): +1059 |

銅蟲(chóng) (小有名氣)

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