Nb diamond MEAM_LAMMPS_LeeBaskesKim_2001_Nb__MO_802302521552_001 5.425685524940491 C11 = -1737540.127913 +/- 0.007336 GPa C12 = 78.377560 +/- 0.005187 GPa C44 = -651598.882066 +/- 0.001834 GPa B = -579127.790931 +/- 0.004235 GPa