Ar fcc Morse_Shifted_Jelinek_1972_Ar__MO_831902330215_002 5.2535636127 Optimization terminated successfully. Current function value: -0.371213 Iterations: 71 Function evaluations: 185 C11 = 4.273446 +/- 0.007336 GPa C12 = 2.503960 +/- 0.005187 GPa C44 = 2.507801 +/- 0.001834 GPa B = 3.093789 +/- 0.004235 GPa