Enter an atomic species: Al Enter a cubic lattice type: fcc Enter a model name: MEAM_LAMMPS_KimJungLee_2015_NiAlCo__MO_876687166519_001 Enter a lattice constant (m): 4.044650763273239e-10 WARNING, 1 imaginary frequencies at q = ( 0.00, 0.00, 0.00) ; (omega_q = 1.206e-08*i) WARNING, 1 imaginary frequencies at q = ( 0.00, 0.00, 0.00) ; (omega_q = 1.206e-08*i)