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郭芳8888金蟲(chóng) (正式寫手)
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[求助]
VASP計(jì)算時(shí),TOTAL-FORCE這么高是什么原因,求大神 已有2人參與
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POSITION TOTAL-FORCE (eV/Angst) ----------------------------------------------------------------------------------- 2.07327 0.00000 1.95850 -1.058770 0.000000 0.000000 3.80631 0.00000 0.00000 0.756301 0.000000 0.000000 0.03047 3.91700 0.00000 -0.213615 0.000000 0.000000 3.89534 3.91700 0.00000 0.070406 0.000000 0.000000 2.00281 1.91209 0.00000 -0.052952 0.044286 0.000000 5.83582 1.99980 0.00000 0.037517 -0.110169 0.000000 2.00281 5.92191 0.00000 -0.052952 -0.044286 0.000000 5.83582 5.83420 0.00000 0.037517 0.110169 0.000000 0.05807 0.00000 0.00000 -0.090957 0.000000 0.000000 5.82279 0.00000 1.95850 0.162128 0.000000 0.000000 0.03286 2.00928 1.95850 -0.093962 -0.067175 0.000000 0.03286 5.82472 1.95850 -0.093962 0.067175 0.000000 3.87511 1.90140 1.95850 0.270643 0.205806 0.000000 1.99360 3.91700 1.95850 0.043551 0.000000 0.000000 5.83095 3.91700 1.95850 0.008461 0.000000 0.000000 3.87511 5.93260 1.95850 0.270643 -0.205806 0.000000 ----------------------------------------------------------------------------------- total drift: -0.001301 -0.000000 0.000000 |
木蟲(chóng) (正式寫手)
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看了下你的INCAR,我覺(jué)得在結(jié)構(gòu)優(yōu)化的時(shí)候有關(guān)磁性的參數(shù)可以不添加上去如VOSKOWN,另外PREC沒(méi)必要取得這么高,只有在你計(jì)算力的有關(guān)性質(zhì)的時(shí)候可以取高點(diǎn);還有就是可以把POTIM參數(shù)減小一點(diǎn),K點(diǎn)也不用取高。這里貼上我用的結(jié)構(gòu)優(yōu)化INCAR,也推薦你看一個(gè)帖子,希望對(duì)你有用:http://www.gaoyang168.com/bbs/viewthread.php?tid=2512497&fpage=1 ###################INCAR############### System = Obj ### Start parameters ISTART = 0 #0 start a new computation, no WAVECAR file -- default 1 ICHARG = 2 #initial charge densities from atoms ### Electronic Relaxation ENCUT = 400 LREAL = Auto #projection done in real space EDIFF = 1.0E-4 #Default 1.0E-4 IALGO = 48 #RMM-DIIS algorithm for electrons NELMIN = 4 #default 2; do a minimum of four electronic steps ### Ionic relaxation EDIFFG = -0.02 #Default EDIFF*10 NSW = 300 #default 0 IBRION = 2 #use CG algorithm ISIF = 2 #relax ions only POTIM = 0.1 #default 0.5; time-step for ion-motion ### DOS related values ISMEAR = -5 #method to determine partial occupancies;-5 for semiconductor and non-metal 1 for metal SIGMA = 0.1 #broadening in eV ### BANDS related values #NBANDS = 280 #number of occupied bands ### others PREC = Medium GGA = PE NPAR = 8 ### Output control LWAVE = F LCHARG = F |
木蟲(chóng) (正式寫手)
金蟲(chóng) (正式寫手)
木蟲(chóng) (正式寫手)
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