element: Rb lattice type: sc modelname: Sim_LAMMPS_EIM_Zhou_2010_BrClCsFIKLiNaRb__SM_259779394709_000 Attempting to perform relaxation using initial lattice constant guess of 2.5 Angstroms Optimization terminated successfully. Current function value: -0.428128 Iterations: 32 Function evaluations: 65 {'lattice_constant': 4.8357974588871, 'cohesive_energy': 0.42812782782429937, 'element': 'Rb', 'species': 'Rb', 'crystal_structure': 'sc', 'space_group': 'Pm-3m', 'wyckoff_code': '1a', 'basis_atoms': '[[0.0 0.0 0.0]]', 'iterations': 32, 'func_calls': 65, 'warnflag': 0, 'repeat': 0}