lammps/examples/eim/in.eim

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# NaCl test problem for embedded atom method (EIM) potential
units metal
atom_style atomic
boundary p p p
lattice diamond 5.0
read_data data.eim
pair_style eim
pair_coeff * * Na Cl ffield.eim Na Cl
neighbor 0.3 bin
neigh_modify delay 0
timestep 0.001
thermo_style custom step pe pxx pyy pzz temp
thermo 50
velocity all create 1400.0 43454 dist gaussian mom yes
fix int all npt temp 1400.0 300.0 0.1 aniso 0.0 0.0 0.1
run 100