element: Ca lattice type: fcc modelname: MEAM_LAMMPS_KimJeonLee_2015_MgCa__MO_611309973581_000 Attempting to perform relaxation using initial lattice constant guess of 2.5 Angstroms Optimization terminated successfully. Current function value: -6.200000 Iterations: 31 Function evaluations: 63 {'lattice_constant': 4.525483399629593, 'cohesive_energy': 1.5500000001746312, 'element': 'Ca', 'species': 'Ca" "Ca" "Ca" "Ca', 'crystal_structure': 'fcc', 'space_group': 'Fm-3m', 'wyckoff_code': '4a', 'basis_atoms': '[[0.0 0.0 0.0] [0.5 0.5 0.0] [0.5 0.0 0.5] [0.0 0.5 0.5]]', 'iterations': 31, 'func_calls': 63, 'warnflag': 0, 'repeat': 0}