Enter an atomic species: Ni Enter a cubic lattice type: fcc Enter a model name: MEAM_LAMMPS_MaiselKoZhang_2017_VNiTi__MO_744610363128_002 Enter a lattice constant (m): 3.521391741931439e-10 WARNING, 3 imaginary frequencies at q = ( 0.00, 0.00, 0.00) ; (omega_q = 1.196e-08*i) WARNING, 3 imaginary frequencies at q = ( 0.00, 0.00, 0.00) ; (omega_q = 1.196e-08*i)