Enter a species (e.g. Al, Fe): Mg Enter a hexagonal lattice type (e.g. hcp): hcp Enter a model name: MEAM_LAMMPS_KimLee_2017_MgNd__MO_059320827436_000 Enter hexagonal lattice constants 'a' and 'c' (m): 3.209064998805839e-10, 5.196910502692713e-10