Figure 8 shows the surface morphologies of oxides obtained at various durations at 1000 ℃. When temperature was above Tb, in addition to the formation of fifine
polyhedron and rod-type structures, dense massive structures were formed, as shown in Fig. 8.
Figure 8 shows the surface morphologies of oxides obtained at various durations at 1000 ℃. When temperature was above Tb, in addition to the formation of fifine
polyhedron and rod-type structures, dense massive structures were formed, as shown in Fig. 8.