Nb bcc Sim_LAMMPS_ADP_StarikovSmirnova_2021_ZrNb__SM_993852507257_000 3.294839940965176 Optimization terminated successfully. Current function value: -15.019957 Iterations: 73 Function evaluations: 190 C11 = 241.493697 +/- 0.007336 GPa C12 = 132.134280 +/- 0.005187 GPa C44 = 45.459902 +/- 0.001834 GPa B = 168.587419 +/- 0.004235 GPa