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[交流]
請教我的用vasp優(yōu)化Ni的晶格常數(shù)的時候怎么不收斂啊。內(nèi)含INCAR 已有7人參與
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SYSTEM=Ni Name of the system NWRITE=2 ! verbosity write flag ISTART=0 ! startjo: 0-new 1-const 2-samecut ISPIN=2 ! spin polarized calculation (2-yes 1-no) GGA=91 INIWAV=1 ! initial elect. wf : 0-lowe 1-rand NBANDS=600 VOSKOWN=1 PREC=Accurate ! precission:medium h NELM=60 EDIFF=10E-6 ! stopping criterion for electr updt EDIFFG=-0.005 ! stopping criterion for + energy - forces ENCUT=350 ! max cut off introduced based on previous calc. NSW=200 ! number of steps for ionic update POTIM=0.5 ! default value for IBRION=1&2 IBRION=2 ! ionic relaxation:0-MD 1-quasi new 2-CG ISIF=3 ! switch to control if calculate stress tensor etc. and what to relax? ISYM=1 ! symmetry:0-nonsym 1-usesym LCORR=.TRUE. ! Harris correction to forces and stress tensor ISMEAR=1 ! for semiconductor, and using 1 or 2 k points, otherwise <0,=1 for metals SIGMA=0.2 ! broadening in eV -4 tet -1 fermi 0-gaus IALGO=48 ! algorithm:Use only 8(CG) or 48 (RMM-DIIS,for parallel) LREAL=.FALSE. ! non local projectors in real space,note:using the same parameters for all calculations to avoid errors NSIM=1 ! make the cal faster, no influ on TE IMIX=4 ! IMIX, AMIX, BMIX for default values BMIX=1.0 ! tags for mixing LWAVE=.FALSE. LCHARG=.TRUE. LVTOT=.FALSE. ! create WAVECAR, CHGCAR,LOCPOT 上面是INCAR 看別人的都是3.53左右 我從3.0~4.0總能量一直再降 |


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