Enter an atomic species: Ni Enter a cubic lattice type: fcc Enter a model name: SNAP_LiHuChen_2018_Ni__MO_913991514986_000 Enter a lattice constant (m): 3.520425826311112e-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