Nb diamond MEAM_LAMMPS_YangQi_2019_Nb__MO_360068930164_000 7.3262292593717575 Optimization terminated successfully. Current function value: -19.190683 Iterations: 72 Function evaluations: 183 C11 = 77.580198 +/- 0.007336 GPa C12 = 54.686565 +/- 0.005187 GPa C44 = 24.016915 +/- 0.001834 GPa B = 62.317776 +/- 0.004235 GPa