Fig. 3
From: The earliest known artificial synthesized ε-Fe2O3 in the Deqing Kiln ceramic ware of Tang Dynasty
The crystal morphologies and Raman spectra in different sample regions. a–d come from region I in Fig. 2, and the “1” “2” and “3” in each subplot number denote optical images from Raman microscope, middle magnification SEM back-scattering images and high magnification SEM back-scattering images. e shows the Raman spectra obtained in the center of each subplot