170362.fig.003a
(a)
170362.fig.003b
(b)
170362.fig.003c
(c)
170362.fig.003d
(d)
Figure 3: SEM images of BiNbO4 prepared by the flux method and solid state reaction at high and low temperatures: (a) by solid state reaction (1173 K, 24 h), (b) by the flux method (1073 K, 10 h), (c) by solid state reaction (1473 K, 24 h), and (d) by the flux method (1473 K, 10 h).