Tl fcc LJ_ElliottAkerson_2015_Universal__MO_959249795837_003 3.988264918327331 Optimization terminated successfully. Current function value: -19.216777 Iterations: 93 Function evaluations: 251 C11 = 554.242899 +/- 0.007336 GPa C12 = 316.219969 +/- 0.005187 GPa C44 = 316.877221 +/- 0.001834 GPa B = 395.560946 +/- 0.004235 GPa