Enter an atomic species: Al Enter a cubic lattice type: fcc Enter a model name: MEAM_LAMMPS_SunRamachandranWick_2018_TiAl__MO_022920256108_002 Enter a lattice constant (m): 4.049985826015473e-10 WARNING, 2 imaginary frequencies at q = ( 0.00, 0.00, 0.00) ; (omega_q = 9.909e-09*i) WARNING, 2 imaginary frequencies at q = ( 0.00, 0.00, 0.00) ; (omega_q = 9.909e-09*i)