element: C lattice type: bcc modelname: Sim_LAMMPS_AIREBO_Morse_OConnorAndzelmRobbins_2015_CH__SM_460187474631_000 Attempting to perform relaxation using initial lattice constant guess of 2.5 Angstroms Optimization terminated successfully. Current function value: -5.762072 Iterations: 28 Function evaluations: 58 {'lattice_constant': 2.1891660392284393, 'cohesive_energy': 2.881036173814677, 'element': 'C', 'species': 'C" "C', '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': 28, 'func_calls': 58, 'warnflag': 0, 'repeat': 0}