Fig. 5From: Burst nucleation by hot injection for size controlled synthesis of ε-cobalt nanoparticlesTEM images of ε-Co NPs synthesized varying the reaction holding time. Synthesis conditions: injection temperature = 443 K, \(\frac{[Co]}{[OA]} = 12.9,\) injection time = 5 s, and reaction holding time: a 300, b 1800 and c 7200 s. Their corresponding particle diameter distributions were obtained from evaluation of ~500 particles. Scale bars 50 nmBack to article page