F fcc Sim_LAMMPS_EIM_Zhou_2010_BrClCsFIKLiNaRb__SM_259779394709_000 5.4537331983447075 Optimization terminated successfully. Current function value: -3.277230 Iterations: 89 Function evaluations: 240 C11 = 0.780605 +/- 0.007336 GPa C12 = 9.280308 +/- 0.005187 GPa C44 = 9.280515 +/- 0.001834 GPa B = 6.447074 +/- 0.004235 GPa