element: O lattice type: fcc modelname: Tersoff_LAMMPS_ByggmastarNagelAlbe_2019_FeO__MO_608695023236_000 Detected that energy at a lattice constant of 2.5 Angstroms was equal to the isolated energy (i.e. no interactions). Shrinking box until energy becomes non-trivial... Attempting to perform relaxation using initial lattice constant guess of 2.5 Angstroms Optimization terminated successfully. Current function value: -1.792622 Iterations: 28 Function evaluations: 56 {'lattice_constant': 3.0295212641358376, 'cohesive_energy': 0.44815541650531737, 'element': 'O', 'species': 'O" "O" "O" "O', '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': 28, 'func_calls': 56, 'warnflag': 0, 'repeat': 0}