Enter a species (e.g. Al, Fe): Ni Enter a hexagonal lattice type (e.g. hcp): hcp Enter a model name: MEAM_LAMMPS_MaiselKoZhang_2017_VNiTi__MO_744610363128_000 Enter hexagonal lattice constants 'a' and 'c' (m): 2.486504673148575e-10, 4.083145374684326e-10