Enter an atomic species: Ni Enter a cubic lattice type: fcc Enter a model name: MEAM_LAMMPS_KavousiNovakBaskes_2019_NiTi__MO_050461957184_001 Enter a lattice constant (m): 3.5213917568326e-10 WARNING, 3 imaginary frequencies at q = ( 0.00, 0.00, 0.00) ; (omega_q = 8.134e-09*i) WARNING, 3 imaginary frequencies at q = ( 0.00, 0.00, 0.00) ; (omega_q = 8.134e-09*i)