754704.fig.003
Figure 3: (a) XRD profile of CaO, P2O5, and CaF2 powder mixture in the presence of 5 wt.% ZnO after 5 h of milling, (b) XRD pattern of the standard sample (JCPDS#15–0876), (c) XRD patterns of the standard ZnO (JCPDS#036–1451), and (d-e) morphological features of FAp-ZnO composite nanopowders after 5 h of milling.