Figure 3
From: High saturation magnetization of γ-Fe2O3 nano-particles by a facile one-step synthesis approach
SEM images of of nano-particles of different calcinations temperature (a) 100 °C, (b) 150 °C, (c) 200 °C, (d) 250 °C, (e) 300 °C, (f) 350 °C and (g) 400 °C, respectively. The inset of (c) is the size distributions of nano-particles at 200 °C.
