Np bcc LJ_ElliottAkerson_2015_Universal__MO_959249795837_003 4.18261449039 Optimization terminated successfully. Current function value: -46.441554 Iterations: 73 Function evaluations: 192 C11 = 721.342103 +/- 0.007336 GPa C12 = 880.722608 +/- 0.005187 GPa C44 = 881.693740 +/- 0.001834 GPa B = 827.595773 +/- 0.004235 GPa