Ra bcc LJ_ElliottAkerson_2015_Universal__MO_959249795837_003 4.86503116041 Warning: Maximum number of function evaluations has been exceeded. C11 = 268.693384 +/- 0.007336 GPa C12 = 328.061168 +/- 0.005187 GPa C44 = 328.422904 +/- 0.001834 GPa B = 308.271907 +/- 0.004235 GPa