element: Ce lattice type: fcc modelname: Sim_LAMMPS_ReaxFF_BroqvistKullgrenWolf_2015_CeO__SM_063950220736_000 Attempting to perform relaxation using initial lattice constant guess of 2.5 Angstroms Optimization terminated successfully. Current function value: -17.129650 Iterations: 33 Function evaluations: 70 {'lattice_constant': 4.8230752646923065, 'cohesive_energy': 4.282412417051782, 'element': 'Ce', 'species': 'Ce" "Ce" "Ce" "Ce', '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': 33, 'func_calls': 70, 'warnflag': 0, 'repeat': 0}