Ni diamond SNAP_LiHuChen_2018_Ni__MO_913991514986_000 5.321701258420944 Optimization terminated successfully. Current function value: -37.057063 Iterations: 1064 Function evaluations: 3168 C11 = 65.397785 +/- 0.007336 GPa C12 = 58.153356 +/- 0.005187 GPa C44 = 11.458226 +/- 0.001834 GPa B = 60.568166 +/- 0.004235 GPa