Enter a species (e.g. Al, Fe): Zn Enter a hexagonal lattice type (e.g. hcp): hcp Enter a model name: Tersoff_LAMMPS_ErhartJuslinGoy_2006_ZnO__MO_616776018688_003 Enter hexagonal lattice constants 'a' and 'c' (m): 2.700186163329738e-10, 4.398343191085117e-10