Figure 9
Sequence of the X-ray diffraction patterns collected in situ during the stepwise heating of the B–BN mixture at 7.4 GPa. The bars on the top represent the expected line positions for the hypothetical B6N phase with B6O-like structure [R3m, a = 5.457 Å, c = 12.241 Å (Hubert et al., 1997)]. |