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zhengbohan木蟲 (小有名氣)
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[求助]
計算彈性常數(shù)的問題
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在用vasp5.2算單斜YVO4的彈性常數(shù),得出結(jié)果都是負(fù)值,是不是哪里設(shè)置的問題?求助 TOTAL ELASTIC MODULI (kBar) Direction XX YY ZZ XY YZ ZX -------------------------------------------------------------------------------- XX -4478.7063 -4089.5812 -7210.0791 0.0000 -1034.4726 900.4692 YY -4089.5812 -1886.8150 -5325.5829 0.0000 -1045.9579 217.1807 ZZ -7210.0791 -5325.5829 -5696.3147 0.0000 -1221.4168 989.1406 XY 0.0000 0.0000 0.0000 478.8831 0.0000 0.0000 YZ -1034.4726 -1045.9579 -1221.4168 0.0000 -782.3298 -623.3351 ZX 900.4692 217.1807 989.1406 0.0000 -623.3351 -2280.0065 -------------------------------------------------------------------------------- |

鐵桿木蟲 (著名寫手)
To be excellent

木蟲 (小有名氣)
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Start parameter for this run: LWAVE = False LCHARG = False Electronic relaxation: ENCUT = 400.0 ! Cutoff energy for plane waves basis set in eV #ENAUG = 750.0 ! Cutoff energy for the augmentation charge ALGO = Fast ! A Davidson blocked iteration scheme NELMIN = 8 ! Minimum number of eletronic selfconsistency (SC) steps NELM = 1000 ! Maximum number of electronic SC steps NELMDL = -4 ! Number of NON-selfconsistency steps EDIFF = 1.0E-4 ! Global-break condition for the electronic SC-loop (ELM) AMIX = 0.4 BMIX = 1.000 Calculation mode: PREC = Accurate ! Calcululation level (Changes FFT-grids) #ISPIN = 2 ! Non-spin-polarized calculations ADDGRID = .TRUE. ! PAW flag #MAGMOM = 2*0 3*1 3*-1 8*0 24*0 #PREC = Normal ! Should not be used for final total energy calculations #LREAL = AUTO ! Should not be used for final total energy calculations #####LMAXMIX = 6 ! PAW flag Ionic relaxation: NSW = 100 ! Number of ionic steps EDIFFG = -0.0200 ! stop if all forces are smaller than |EDIFFG| IBRION = 6 ! ISIF = 3 ! Force, stress, relax ions, change cell shape, change cell volume NFREE = 4 POTIM = 0.30 Integration over the Brillouin zone (BZ): ISMEAR = -5 SIGMA = 0.05 #LOPTICS = .TRUE. #NBANDS = 400 DOS calculation: #LORBIT = 10 ! Calculate the DOS without providing the Wigner Seitz radius #NEDOS = 4001 ! Number of points to calculate the DOS #EMin=-25 #Emax=15 OUTCAR size: NWRITE = 2 ! Determines how much information will be written in OUTCAR #LVTOT = .TRUE. #IDIPOL = 3 ! dipole correction #DIPOL = 0.5 0.5 0.5 #LDIPOL = .TRUE. Key for parallel mode calculation: #NPAR = 1 LPLANE = .TRUE. #NSIM = 4 EOF |

木蟲 (小有名氣)

木蟲 (小有名氣)

木蟲 (小有名氣)

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