Yb bcc LJ_ElliottAkerson_2015_Universal__MO_959249795837_003 4.116565771400928 Optimization terminated successfully. Current function value: -2.075935 Iterations: 71 Function evaluations: 184 C11 = 33.821026 +/- 0.007336 GPa C12 = 41.293781 +/- 0.005187 GPa C44 = 41.339313 +/- 0.001834 GPa B = 38.802863 +/- 0.004235 GPa