Enter a species (e.g. Al, Fe): Si Enter a hexagonal lattice type (e.g. hcp): hcp Enter a model name: MEAM_LAMMPS_DuLenoskyHennig_2011_Si__MO_883726743759_002 Enter hexagonal lattice constants 'a' and 'c' (m): 2.70639190329239e-10, 4.419519471377435e-10