Enter an atomic species: Ni Enter a cubic lattice type: fcc Enter a model name: MEAM_LAMMPS_Wagner_2007_Ni__MO_444394830472_002 Enter a lattice constant (m): 3.520000003278256e-10 WARNING, 2 imaginary frequencies at q = ( 0.00, 0.00, 0.00) ; (omega_q = 9.752e-09*i) WARNING, 2 imaginary frequencies at q = ( 0.00, 0.00, 0.00) ; (omega_q = 9.752e-09*i)