Enter a species (e.g. Al, Fe): Cu Enter a hexagonal lattice type (e.g. hcp): hcp Enter a model name: MEAM_LAMMPS_Wagner_2007_Cu__MO_313717476091_001 Enter hexagonal lattice constants 'a' and 'c' (m): 2.553729213613683e-10, 4.207494053895184e-10