element: W lattice type: fcc modelname: MEAM_LAMMPS_ParkFellingerLenosky_2012_W__MO_560940542741_002 Attempting to perform relaxation using initial lattice constant guess of 2.5 Angstroms Optimization terminated successfully. Current function value: 133.768668 Iterations: 26 Function evaluations: 52 {'lattice_constant': 2.5763277038931847, 'cohesive_energy': -33.44216704014175, 'element': 'W', 'species': 'W" "W" "W" "W', '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': 26, 'func_calls': 52, 'warnflag': 0, 'repeat': 0}