Enter a species (e.g. Al, Fe): Si Enter a hexagonal lattice type (e.g. hcp): hcp Enter a model name: MEAM_LAMMPS_JelinekGrohHorstemeyer_2012_AlSiMgCuFe__MO_262519520678_000 Enter hexagonal lattice constants 'a' and 'c' (m): 3.772609896722603e-10, 2.904401855430215e-10