element: Pb lattice type: bcc modelname: EAM_Dynamo_ZhouWadleyJohnson_2001NISTretabulation_Pb__MO_988703794028_000 Attempting to perform relaxation using initial lattice constant guess of 2.5 Angstroms Optimization terminated successfully. Current function value: -4.008715 Iterations: 30 Function evaluations: 62 {'lattice_constant': 3.962863489985466, 'cohesive_energy': 2.004357274729533, 'element': 'Pb', 'species': 'Pb" "Pb', 'crystal_structure': 'bcc', 'space_group': 'Im-3m', 'wyckoff_code': '2a', 'basis_atoms': '[[0.0 0.0 0.0] [0.5 0.5 0.5]]', 'iterations': 30, 'func_calls': 62, 'warnflag': 0, 'repeat': 0}