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[求助]
VASP计算反铁磁FCC铁的弹性常数,结果不是立方晶格的形式是为什么?
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INCAR: SYSTEM = FeMn ENCUT = 450 ISTART = 0 ; ICHARG = 2 ISMEAR = 1 ; SIGMA = 0.2 LREAL = Auto NELM = 100 ISPIN = 2 MAGMOM = 2*-4 2*4 ISIF = 3 NFREE = 4 IBRION = 6 POTIM = 0.015 EDIFF = 1E-7 #NCORE = 8 KPAR = 8 PREC = Accurate KPOINTS: Automatic generation 0 G 7 7 7 0.0 0.0 0.0 POSCAR: Fe 1.0 3.4484999180 0.0000000000 0.0000000000 0.0000000000 3.4484999180 0.0000000000 0.0000000000 0.0000000000 3.4484999180 Fe 4 Direct 0.000000000 0.000000000 0.000000000 -0.000000000 0.500000000 0.500000000 0.500000000 -0.000000000 0.500000000 0.500000000 0.500000000 0.000000000 TOTAL ELASTIC MODULI (kBar) Direction XX YY ZZ XY YZ ZX -------------------------------------------------------------------------------- XX 2375.7068 1527.7701 1527.7701 0.0000 0.0000 0.0000 YY 1527.7701 4175.6944 2237.1967 0.0000 0.0000 0.0000 ZZ 1527.7701 2237.1967 4175.6944 0.0000 0.0000 0.0000 XY 0.0000 0.0000 0.0000 2216.0669 0.0000 0.0000 YZ 0.0000 0.0000 0.0000 0.0000 2175.5105 0.0000 ZX 0.0000 0.0000 0.0000 0.0000 0.0000 2216.0670 -------------------------------------------------------------------------------- |
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