Enter a species (e.g. Al, Fe): U Enter a hexagonal lattice type (e.g. hcp): hcp Enter a model name: MEAM_LAMMPS_MooreBeelerDeo_2015_UZr__MO_453094726678_001 Enter hexagonal lattice constants 'a' and 'c' (m): 3.027997605688868e-10, 4.944699384204605e-10