element: Er lattice type: bcc modelname: LJ_ElliottAkerson_2015_Universal__MO_959249795837_003 Attempting to perform relaxation using initial lattice constant guess of 2.5 Angstroms Optimization terminated successfully. Current function value: -11.761060 Iterations: 31 Function evaluations: 64 {'lattice_constant': 4.160598248243332, 'cohesive_energy': 5.880530152928403, 'element': 'Er', 'species': 'Er" "Er', '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': 31, 'func_calls': 64, 'warnflag': 0, 'repeat': 0}