Fig. 5
From: The earliest known artificial synthesized ε-Fe2O3 in the Deqing Kiln ceramic ware of Tang Dynasty
Local Raman mapping results in region II. a Local back-scattering SEM images in region II, where the orange square shows the Raman mapping area. b Optical image corresponds to the orange square area shown (a). c Three principal Raman components obtained in the Raman mapping of area (b). d Raman mapping results of (b) area. In (c) and (d), red, green and blue represent α-Fe2O3, ε-Fe2O3 and quartz, respectively