Nb hcp EAM_MagneticCubic_DerletNguyenDudarev_2007_Nb__MO_218026715338_002 2.96166569317 4.83637972757 Optimization terminated successfully. Current function value: -14.783817 Iterations: 71 Function evaluations: 190 Potential info: Nb potential Atomic number: 41