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suspend2014新蟲 (小有名氣)
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[求助]
請問VASP計(jì)算時,為什么我的POSCAR稍微改了下,結(jié)果能差那么多 已有2人參與
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我的POSCAR是用不同軟件從CIF轉(zhuǎn)的格式,一個是 La2O3 1.0 3.9370000362 0.0000000000 0.0000000000 -1.9685000181 3.4095420461 0.0000000000 0.0000000000 0.0000000000 6.1500000954 2 3 Cartesian 0.000000000 2.273028098 1.519664997 1.968499901 1.136513948 4.630335099 0.000000000 0.000000000 0.000000000 0.000000000 2.273028098 3.967980148 1.968499901 1.136513948 2.182019947 另一種是 La2O3 3.937000 0.866025403784439 -0.500000000000000 0.000000000000000 0.000000000000000 1.000000000000000 0.000000000000000 0.000000000000000 0.000000000000000 1.562103124206249 2 3 Cartesian 1.136514004899778 1.968500000000000 1.519665000000000 2.273028009799556 0.000000000000000 4.630335000000001 0.000000000000000 0.000000000000000 0.000000000000000 1.136514004899778 1.968500000000000 3.967980000000000 2.273028009799556 0.000000000000000 2.182020000000000 INCAR是用腳本自動生成的rm WAVECAR for i in 300 350 400 450 500 do cat >INCAR<<! SYSTEM=LA2O3 ENCUT=$i ISTART=0;ICHARG=2 ISMEAR=0;sigma=0.1 NELM=90 NELMIN=8 ISPIN=2 EDIFF=10E-5 LREAL=.FALSE. PREC=Accurate ! echo "ENCUT =$i eV"; time vasp E=$(grep "TOTEN" OUTCAR | tail -1 | awk '{printf "%12.6f \n", $5}') echo $i $E >>comment done 可為什么結(jié)果卻是以下兩種呢,上面的POSCAR是從同一個CIF中轉(zhuǎn)換而來的,不過一個是用VESTA,另一個是用CIF2CELL,而且我看也沒什么問題 300 -13.822602 350 -13.591244 400 -13.714225 450 -13.539265 500 -13.536550 300 -42.346665 350 -42.039226 400 -41.951873 450 -41.911078 500 -41.899045 |
新蟲 (小有名氣)
木蟲 (正式寫手)

新蟲 (小有名氣)
專家顧問 (著名寫手)
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專家經(jīng)驗(yàn): +20 |
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La2O3 3.937000 0.866025403784439 -0.500000000000000 0.000000000000000 0.000000000000000 1.000000000000000 0.000000000000000 0.000000000000000 0.000000000000000 1.562103124206249 2 3 Cartesian 1.136514004899778 1.968500000000000 1.519665000000000 2.273028009799556 0.000000000000000 4.630335000000001 0.000000000000000 0.000000000000000 0.000000000000000 1.136514004899778 1.968500000000000 3.967980000000000 2.273028009799556 0.000000000000000 2.182020000000000 ?@?? POSCAR ??????}?? ???????ε????? 300 eV cutoff energy ?????Y??? CONTCAR ?????~ ?@??N POSCAR ?a???????? CONTCAR ?????? ???????????????POSCAR?????? Cartesian ?@???|?? ??VASP??????? POSCAR ??? Cartesian VASP ?????? POSCAR ??o?? lattice vectors ?????x???? ?????VASP "?" ?????? POSCAR ??o?? lattice vectors ?????x???? ???K??????????o?? lattice constant (????е???? 3.937000) ?Q????f??????????????? POSCAR ???? Cartesian ?????? lattice constant ?????? 1.0000000 DONE |
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