Fig. 2
From: Burst nucleation by hot injection for size controlled synthesis of ε-cobalt nanoparticles
Selected powder X-ray diffraction patterns of ε-Co NPs. Samples were synthesized at 441 K, 5 s injection time, 1800 s reaction holding time and at \(\frac{[Co]}{[OA]}\) equal to a) 19.5, b) 12.9, c) 6.5, and d) 3.2 and e) 2.1. Estimated average crystallite diameters: a) 7.6 nm, b) 6.9 nm, c) 4.1 nm, d) 3.4 nm and e) 2.2 nm. Wavelengths Mo Ka1 = 0.07093 nm and Ka2 = 0.07136 nm. Miller indices given for Bragg reflections from ε-Co. Vertical lines indicating expected positions of CoO peaks. Peak at 2θ = 21.3° from Si (220)