Enter a species (e.g. Al, Fe): Ar Enter a hexagonal lattice type (e.g. hcp): hcp Enter a model name: Morse_Shifted_Jelinek_1972_Ar__MO_831902330215_004 Enter hexagonal lattice constants 'a' and 'c' (m): 3.714955519697364e-10, 6.062858905024546e-10