XRD patterns of samples calcined at 250 and 280 °C revealed none of XRD lines characteristic of α-Fe 2O 3, while the pattern of that fired at 1000 °C confirmed the presence of single-phase cubic spinel structure with no evidence of impurities. FT-IR and SEM studies are consistent ...
It can be a good idea to label each data point on the Williamson-Hall plot according to the index of its reflection to see whether any pattern emerges. It has been stated [6], however, that the Williamson-Hall method, owing to its many assumptions, should not be taken too seriously in...