element: Nb lattice type: fcc modelname: MEAM_LAMMPS_SaLee_2008_NbFe__MO_162036141261_000 Attempting to perform relaxation using initial lattice constant guess of 2.5 Angstroms Optimization terminated successfully. Current function value: -29.239061 Iterations: 31 Function evaluations: 62 {'lattice_constant': 4.165855549275875, 'cohesive_energy': 7.309765148151189, 'element': 'Nb', 'species': 'Nb" "Nb" "Nb" "Nb', 'crystal_structure': 'fcc', 'space_group': 'Fm-3m', 'wyckoff_code': '4a', 'basis_atoms': '[[0.0 0.0 0.0] [0.5 0.5 0.0] [0.5 0.0 0.5] [0.0 0.5 0.5]]', 'iterations': 31, 'func_calls': 62, 'warnflag': 0, 'repeat': 0}