Enter a species (e.g. Al, Fe): Nb Enter a hexagonal lattice type (e.g. hcp): hcp Enter a model name: MEAM_LAMMPS_SaLee_2008_NbFe__MO_162036141261_000 Enter hexagonal lattice constants 'a' and 'c' (m): 2.988818875995083e-10, 4.671827324265166e-10