Fig. 7

XRD patterns of the oxides obtained after combustion of the precursors 1, 8, 9, 10, 11, and 12 at 300 °C (a) and 450 °C (b) in air
XRD patterns of the oxides obtained after combustion of the precursors 1, 8, 9, 10, 11, and 12 at 300 °C (a) and 450 °C (b) in air