As fcc Sim_LAMMPS_BOP_MurdickZhouWadley_2006_GaAs__SM_104202807866_000 4.22417442501 Optimization terminated successfully. Current function value: -9.022364 Iterations: 70 Function evaluations: 184 C11 = 60.122128 +/- 0.007336 GPa C12 = 122.618501 +/- 0.005187 GPa C44 = 8.271362 +/- 0.001834 GPa B = 101.786377 +/- 0.004235 GPa