Figure 1From: Hydrothermal phase transformation of hematite to magnetiteSEM images and corresponding XRD patterns of iron oxide particles. SEM images of iron oxide particles prepared with the addition of (a) 5 ml of 10.67 M KOH, (b) 1 ml of EDA, and (c) both 5 ml of 10.67 M KOH and 1 ml of EDA into the ferric solutions. (d) The corresponding XRD patterns of the iron oxide particles obtained for the cases of (a), (b), and (c).Back to article page