K bcc Sim_LAMMPS_EIM_Zhou_2010_BrClCsFIKLiNaRb__SM_259779394709_001 5.099393233656884 Optimization terminated successfully. Current function value: -1.875470 Iterations: 73 Function evaluations: 191 C11 = 18.088708 +/- 0.007336 GPa C12 = 12.798186 +/- 0.005187 GPa C44 = 12.798303 +/- 0.001834 GPa B = 14.561693 +/- 0.004235 GPa