element: Ar lattice type: bcc modelname: LJ_Truncated_Nguyen_2005_Ar__MO_398194508715_001 Attempting to perform relaxation using initial lattice constant guess of 2.5 Angstroms Optimization terminated successfully. Current function value: -0.166948 Iterations: 32 Function evaluations: 65 {'lattice_constant': 4.198782108724117, 'cohesive_energy': 0.08347375632891625, 'element': 'Ar', 'species': 'Ar" "Ar', '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': 32, 'func_calls': 65, 'warnflag': 0, 'repeat': 0}