N bcc Sim_LAMMPS_Polymorphic_BereSerra_2006_GaN__SM_518345582208_000 2.06376320124 Warning: Maximum number of function evaluations has been exceeded. C11 = 2101.896400 +/- 0.007336 GPa C12 = 1611.061947 +/- 0.005187 GPa C44 = 195.061134 +/- 0.001834 GPa B = 1774.673431 +/- 0.004235 GPa