Figure 3
From: Double-walled iron oxide nanotubes via selective chemical etching and Kirkendall process
(a) Raman spectra of three most common iron oxide phases; (b) Raman spectra of double walled nanotubes (peaks fit well with hematite); (c) X-ray diffraction patterns of double walled nanotubes, with the corresponding miller indexes are marked. Peak values were compared to reference – Table S1.
