Enter a species (e.g. Al, Fe): Al Enter a hexagonal lattice type (e.g. hcp): hcp Enter a model name: MEAM_LAMMPS_KimSeolJi_2017_PtAl__MO_793141037706_002 Enter hexagonal lattice constants 'a' and 'c' (m): 2.866634301934395e-10, 4.681194212599144e-10