Enter a species (e.g. Al, Fe): Fe Enter a hexagonal lattice type (e.g. hcp): hcp Enter a model name: MEAM_LAMMPS_LeeWirthShim_2005_FeCu__MO_063626065437_002 Enter hexagonal lattice constants 'a' and 'c' (m): 2.552592002425806e-10, 4.168365284968257e-10