Ca diamond LJ_ElliottAkerson_2015_Universal__MO_959249795837_003 7.8275751099 Optimization terminated successfully. Current function value: -3.297977 Iterations: 70 Function evaluations: 180 C11 = 7.354371 +/- 0.007336 GPa C12 = 9.846958 +/- 0.005187 GPa C44 = -16099.532464 +/- 0.001834 GPa B = 9.016095 +/- 0.004235 GPa