element=lattice type=modelname=Nb fcc EAM_MagneticCubic_DerletNguyenDudarev_2007_Nb__MO_218026715338_002 Attempting to perform relaxation using initial lattice constant guess of 2.5 Angstroms Optimization terminated successfully. Current function value: -7.391908 Iterations: 31 Function evaluations: 62 {'basis_atoms': '[[0.0 0.0 0.0] [0.0 0.5 0.5] [0.5 0.0 0.5] [0.5 0.5 0.0]]', 'repeat': 0, 'cohesive_energy': 7.391908349577176, 'space_group': 'Fm-3m', 'element': 'Nb', 'lattice_constant': 4.188427768647671, 'wyckoff_code': '4a', 'crystal_structure': 'fcc', 'iterations': 31, 'warnflag': 0, 'species': 'Nb" "Nb" "Nb" "Nb', 'func_calls': 62} Potential info: Nb potential Atomic number: 41