Enter a species (e.g. Al, Fe): W Enter a hexagonal lattice type (e.g. hcp): hcp Enter a model name: MEAM_LAMMPS_ParkFellingerLenosky_2012_W__MO_560940542741_000 Enter hexagonal lattice constants 'a' and 'c' (m): 2.809663586540781e-10, 4.747850939103678e-10