He bcc LJ_ElliottAkerson_2015_Universal__MO_959249795837_003 0.616384059191 Optimization terminated successfully. Current function value: -0.014998 Iterations: 69 Function evaluations: 176 C11 = 72.788139 +/- 0.007336 GPa C12 = 88.870670 +/- 0.005187 GPa C44 = 88.968662 +/- 0.001834 GPa B = 83.509826 +/- 0.004235 GPa