Enter a species (e.g. Al, Fe): Ni Enter a hexagonal lattice type (e.g. hcp): hcp Enter a model name: MEAM_LAMMPS_EtesamiAsadi_2018_Ni__MO_937008984446_000 Enter hexagonal lattice constants 'a' and 'c' (m): 2.485836197487331e-10, 4.077528794868113e-10