Enter a species (e.g. Al, Fe): Ni Enter a hexagonal lattice type (e.g. hcp): hcp Enter a model name: MEAM_LAMMPS_LeeShim_2004_NiCu__MO_409065472403_002 Enter hexagonal lattice constants 'a' and 'c' (m): 2.491371905803683e-10, 4.0683932858162e-10