element: Ni lattice type: bcc modelname: MEAM_LAMMPS_ShimParkCho_2003_NiW__MO_500937681860_000 Attempting to perform relaxation using initial lattice constant guess of 2.5 Angstroms Optimization terminated successfully. Current function value: -8.578542 Iterations: 26 Function evaluations: 53 {'lattice_constant': 2.7945275232195854, 'cohesive_energy': 4.289271075204066, 'element': 'Ni', 'species': 'Ni" "Ni', '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': 26, 'func_calls': 53, 'warnflag': 0, 'repeat': 0}