Enter a species (e.g. Al, Fe): O Enter a hexagonal lattice type (e.g. hcp): hcp Enter a model name: MEAM_LAMMPS_GaoOteroAouadi_2013_AgTaO__MO_112077942578_000 Enter hexagonal lattice constants 'a' and 'c' (m): 2.744157291553337e-10, 2.240595127346379e-10