F bcc Sim_LAMMPS_EIM_Zhou_2010_BrClCsFIKLiNaRb__SM_259779394709_000 4.338208571076393 Optimization terminated successfully. Current function value: -1.727525 Iterations: 72 Function evaluations: 188 C11 = 21.021618 +/- 0.007336 GPa C12 = 9.722730 +/- 0.005187 GPa C44 = 9.722792 +/- 0.001834 GPa B = 13.489026 +/- 0.004235 GPa