Hello
I am a new user of LAMMPS. I installed lammps-12Dec 18. I found many input script on websites and follow them but still there are occuring error . I am trying to use various typs of potential but its not working. i have input script like this…
clear
units metal
dimension 3LAMMPS (12 Dec 2018)
Lattice spacing in x,y,z = 4 4 4
Created orthogonal box = (0 0 0) to (4 4 4)
1 by 1 by 1 MPI processor grid
Created 4 atoms
Time spent = 0.000370979 secs
Replicating atoms …
orthogonal box = (0 0 0) to (4 4 4)
1 by 1 by 1 MPI processor grid
4 atoms
Time spent = 0.0001719 secs
ERROR: Unknown pair style eam (…/force.cpp:262)
Last command: pair_style eam
boundary p p p
atom_style atomic
atom_modify map array
lattice fcc 4
region box block 0 1 0 1 0 1 units lattice
create_box 3 box
create_atoms 1 box
replicate 1 1 1
pair_style eam
pair_coeff * * Ni_u3.eam
neighbor 0.3 bin
neigh_modify delay 5
compute eng all pe/atom
compute eatoms all reduce sum c_eng
reset_timestep 0
dump 1 all atom 50 dump_NiFCC_Or1.atom
thermo 10
thermo_style custom step pe lx ly lz press pxx pyy pzz c_eatoms
min_style cg
minimize 1e-25 1e-25 5000 10000
variable natoms equal “count(all)”
variable teng equal “c_eatoms”
variable length equal “lx”
variable echo equal “v_teng/v_natoms”
print “Total energy (ev) = {teng};"
print "Number of atom = {natoms};”
print “Lattice constant (Angstroms) = {length};"
print "Cohesive energy (ev) = {echo};”
print “All done!”
But… getting output like this…
LAMMPS (12 Dec 2018)
Lattice spacing in x,y,z = 4 4 4
Created orthogonal box = (0 0 0) to (4 4 4)
1 by 1 by 1 MPI processor grid
Created 4 atoms
Time spent = 0.000370979 secs
Replicating atoms …
orthogonal box = (0 0 0) to (4 4 4)
1 by 1 by 1 MPI processor grid
4 atoms
Time spent = 0.0001719 secs
ERROR: Unknown pair style eam (…/force.cpp:262)
Last command: pair_style eam
please comment
your guidance will very helpful for me.