Enter an atomic species: Ni Enter a cubic lattice type: fcc Enter a model name: MEAM_LAMMPS_KoGrabowskiNeugebauer_2015_NiTi__MO_663355627503_000 Enter a lattice constant (m): 3.521391741931439e-10 Writing phonon.eq.pckl Writing phonon.0x-.pckl Writing phonon.0x+.pckl Writing phonon.0y-.pckl Writing phonon.0y+.pckl Writing phonon.0z-.pckl Writing phonon.0z+.pckl WARNING, 3 imaginary frequencies at q = ( 0.00, 0.00, 0.00) ; (omega_q = 9.906e-09*i) WARNING, 3 imaginary frequencies at q = ( 0.00, 0.00, 0.00) ; (omega_q = 9.906e-09*i)