which is according to Warren theory characteristic for the stacking
faults located on the (001) planes [29]. However,random-layer
lattice structure h-BN defect led to the formation of 10 bands in
the XRD pattern and is known as a turbostratic structure [30].
Turbostratic BN crystallites exhibit a similar hexagonal-layered
structure to that of h-BN, however lacking a high orientation
among their layers; i.e. the planar arrangement could be considered a random one [31]. In spite of higher calcining temperature, a similar XRD patterns were obtained for samples obtained at
1000 and 1250 °C. There is a slightly narrowing of the diffraction
lines, however,diffraction peaks around 42.3°, 10 band, which
correspond to the(100)/(101) atomic planes are overlap and cannot be separated. On the other side in sample annealed at 1500 °C
the reflections (100)and(101) can be well distinguished, as well as
(004 and 110),indicating that stacking faults started to disappear.