element: Pb lattice type: sc modelname: MEAM_LAMMPS_EtesamiBaskesLaradji_2018_PbSn__MO_162736908871_001 Attempting to perform relaxation using initial lattice constant guess of 2.5 Angstroms Optimization terminated successfully. Current function value: -1.933641 Iterations: 29 Function evaluations: 59 {'lattice_constant': 3.2005621939897537, 'cohesive_energy': 1.9336407586233602, 'element': 'Pb', 'species': 'Pb', 'crystal_structure': 'sc', 'space_group': 'Pm-3m', 'wyckoff_code': '1a', 'basis_atoms': '[[0.0 0.0 0.0]]', 'iterations': 29, 'func_calls': 59, 'warnflag': 0, 'repeat': 0}