The diffraction-derived crystallite

The diffraction-derived crystallite size gets larger with temperature (Figure 2b), which correlates with the growth of the primary grains as observed in the SEM (Figure 3). It should also be noted that peak broadening vs angle may also indicate the presence of extended defects ormicrostrain effects, but our analysis showed that the peak broadening with diffraction angle was clearly from crystallite size effects, not crystallite microstrain/defects.