Enter a species  (e.g. Al, Fe): Fe
Enter a hexagonal lattice type (e.g. hcp): hcp
Enter a model name: Tersoff_LAMMPS_MuellerErhartAlbe_2007_Fe__MO_137964310702_004
Enter hexagonal lattice constants 'a' and 'c' (m): 2.555474113447894e-10, 4.161857559889612e-10