F200. Crystal growth of Co nanoparticles step by step
HRTEM images of Co particles at different growth stages. (a) a small Co cluster on the Mg2SiO4 surface. (b) and (c) spherical clusters of Co nanocrystallites in different diameters. (d) HRTEM image of an edge area of a polygonal Co particle, showing a large domain of Co single crystal. (e) TEM image of a polygonal particle of Co. (f) A polygonal Co particle resulted from recrystallisation of two clusters originally located at the ends of two Mg2SiO4 branches. [S. Xie, W. Zhou, Y. Q. Zhu, J. Phys. Chem. B, 108, 11561-6 (2004)].