He diamond LJ_ElliottAkerson_2015_Universal__MO_959249795837_003 1.24529673159 Warning: Maximum number of function evaluations has been exceeded. C11 = 12.968915 +/- 0.007336 GPa C12 = 17.364415 +/- 0.005187 GPa C44 = -4.977970 +/- 0.001834 GPa B = 15.899248 +/- 0.004235 GPa